Bibliography

Bibliography and Sources

A note on how these sources were chosen, and how to read them

This book makes factual claims about food, bodies and disease risk. Every one of them is answerable to something, and the list that follows is that something. Three rules governed what was allowed in.

Hierarchy of evidence. Where a systematic review, a meta-analysis or a randomised controlled trial exists, it is cited in preference to a single observational study, and a single observational study in preference to mechanistic reasoning about what a nutrient ought to do. Animal work is identified as animal work. A trial of a concentrated extract in capsules is never presented as evidence about the same plant used as a seasoning.

Effect size rather than statistical significance. A finding can be significant and still too small to matter to someone cooking dinner. Where a result is real but trivially small — a spice that lowers glycated haemoglobin by nine hundredths of a percentage point, a compound that raises resting energy expenditure by thirty-four kilocalories a day — the number is printed in the text so the reader can judge it.

Weakness is stated, not hidden. Where the evidence is thin, contested, industry-funded or drawn from one small trial, the text says so at the point of use rather than quietly citing the study and moving on. Where a claim could not be verified against a primary source, it was cut. Section 6 lists the claims this book deliberately declines to make.

To find a paper from its citation: for anything with a PMID, search that number at pubmed.ncbi.nlm.nih.gov. For anything with a DOI, prefix it with https://doi.org/ — for example https://doi.org/10.1136/bmj.e1454. Abstracts are free for almost everything cited here. Where an entry carries a note in italics, that note is part of the citation and should be read with it.

Section 1 — Nutrition, metabolism and clinical evidence

Citation style: Authors. Title. Journal Year;Volume(Issue):Pages. DOI or PMID. Entries are numbered continuously across all subheadings in this section.

Epidemiology and prevalence

1. Anjana RM, Unnikrishnan R, Deepa M, Pradeepa R, Tandon N, Das AK, Joshi S, Bajaj S, Jabbar PK, Das HK, Kumar A, Dhandhania VK, Bhansali A, Rao PV, Desai A, Kalra S, Gupta A, Lakshmy R, Madhu SV, Elangovan N, Chowdhury S, Venkatesan U, Subashini R, Kaur T, Dhaliwal RS, Mohan V; ICMR-INDIAB Collaborative Study Group. Metabolic non-communicable disease health report of India: the ICMR-INDIAB national cross-sectional study (ICMR-INDIAB-17). Lancet Diabetes Endocrinol 2023;11(7):474–489. PMID 37301218. doi 10.1016/S2213-8587(23)00119-5.
2. Anjana RM, Pradeepa R, Deepa M, et al.; ICMR-INDIAB Collaborative Study Group. Prevalence of diabetes and prediabetes (impaired fasting glucose and/or impaired glucose tolerance) in urban and rural India: Phase I results of the ICMR-INDIAB study. Diabetologia 2011;54(12):3022–3027. doi 10.1007/s00125-011-2291-5.
3. Anjana RM, Deepa M, Pradeepa R, et al. Prevalence of diabetes and prediabetes in 15 states of India: results from the ICMR-INDIAB population-based cross-sectional study. Lancet Diabetes Endocrinol 2017;5(8):585–596. Citation verified; the state-level supplementary tables were not retrieved.
4. Sarma PS, Sadanandan R, Thulaseedharan JV, Soman B, Srinivasan K, Varma RP, Nair MR, Pradeepkumar AS, Jeemon P, Thankappan KR, Kutty RV. Prevalence of risk factors of non-communicable diseases in Kerala, India: results of a cross-sectional study. BMJ Open 2019;9(11):e027880. PMID 31712329. doi 10.1136/bmjopen-2018-027880.
5. Krishnan MN, Zachariah G, Venugopal K, Mohanan PP, Harikrishnan S, Sanjay G, Jeyaseelan L, Thankappan KR. Prevalence of coronary artery disease and its risk factors in Kerala, South India: a community-based cross-sectional study. BMC Cardiovasc Disord 2016;16:12. PMID 26769341. doi 10.1186/s12872-016-0189-3.
6. Zachariah G, Harikrishnan S, Krishnan MN, Mohanan PP, Sanjay G, Venugopal K, Thankappan KR; CSI Kerala CRP Study Investigators. Prevalence of coronary artery disease and coronary risk factors in Kerala, South India: a population survey — design and methods. Indian Heart J 2013;65(3):243–249. PMID 23809375.
7. Kutty VR, Balakrishnan KG, Jayasree AK, Thomas J. Prevalence of coronary heart disease in the rural population of Thiruvananthapuram district, Kerala, India. Int J Cardiol 1993;39(1):59–70. PMID 8407009.
8. Negi J, Sankar D H, Nair AB, Nambiar D. Intersecting sex-related inequalities in self-reported testing for and prevalence of non-communicable disease (NCD) risk factors in Kerala. BMC Public Health 2022;22:544. PMID 35303856.
9. Fernandez B, Gaitonde R. Non-communicable diseases and its risk factors among the transgender population in Kerala: a cross-sectional study. Int J Equity Health 2024;23:107. PMID 38789986.
10. Nair M, Ali MK, Ajay VS, Shivashankar R, Mohan V, et al. CARRS Surveillance study: design and methods to assess burdens from multiple perspectives. BMC Public Health 2012;12:701. doi 10.1186/1471-2458-12-701.
11. Paul M, Mandal S, Samanta R. Does early-life migration experience determine health and health-risk behavior in later life? Evidence from elderly return migrants in Kerala, India. SSM Popul Health 2023;23:101449. PMID 37691975. doi 10.1016/j.ssmph.2023.101449.
12. Incidence of type 2 diabetes mellitus and prediabetes in Kerala: results from a 10-year prospective cohort. BMC Public Health.

Body composition, anthropometry and the South Asian phenotype

13. Misra A, Vikram NK, Ghosh A, Ranjan P, Gulati S; India Obesity Commission. Revised definition of obesity in Asian Indians living in India. Diabetes Metab Syndr: Clin Res Rev 2025;19:102989. doi 10.1016/j.dsx.2024.102989.
14. WHO Expert Consultation. Appropriate body-mass index for Asian populations and its implications for policy and intervention strategies. Lancet 2004;363(9403):157–163. PMID 14726171. doi 10.1016/S0140-6736(03)15268-3.
15. Browning LM, Hsieh SD, Ashwell M. A systematic review of waist-to-height ratio as a screening tool for the prediction of cardiovascular disease and diabetes: 0.5 could be a suitable global boundary value. Nutr Res Rev 2010;23(2):247–269. PMID 20819243.
16. Ashwell M, Gunn P, Gibson S. Waist-to-height ratio is a better screening tool than waist circumference and BMI for adult cardiometabolic risk factors: systematic review and meta-analysis. Obes Rev 2012;13(3):275–286. PMID 22106927.
17. Ashwell M. Plea for simplicity: use of waist-to-height ratio as a primary screening tool to assess cardiometabolic risk. Clin Obes 2012;2(1–2):3–5. PMID 25586041.
18. Iliodromiti S, McLaren J, Ghouri N, Miller MR, Dahlqvist Leinhard O, Linge J, Ballantyne S, Platt J, Foster J, Hanvey S, Gujral UP, Kanaya A, Sattar N, Lumsden MA, Gill JMR. Liver, visceral and subcutaneous fat in men and women of South Asian and white European descent: a systematic review and meta-analysis of new and published data. Diabetologia 2023;66(1):44–56. PMID 36224274. doi 10.1007/s00125-022-05803-5.
19. Kanaya AM, Herrington D, Vittinghoff E, Ewing SK, Liu K, Blaha MJ, Dave SS, Qureshi F, Kandula NR. Understanding the high prevalence of diabetes in U.S. South Asians compared with four racial/ethnic groups: the MASALA and MESA studies. Diabetes Care 2014;37(6):1621–1628. PMID 24705613. doi 10.2337/dc13-2656.
20. Garg SK, Lin F, Kandula N, Ding J, Carr J, Allison M, Liu K, Herrington D, Vaidya D, Vittinghoff E, Kanaya AM. Ectopic fat depots and coronary artery calcium in South Asians compared with other racial/ethnic groups. J Am Heart Assoc 2016;5(11):e004257. PMID 27856485. doi 10.1161/JAHA.116.004257.
21. Ramachandran A, Snehalatha C, Satyavani K, Sivasankari S, Vijay V. Metabolic syndrome does not increase the risk of conversion of impaired glucose tolerance to diabetes in Asian Indians — result of Indian Diabetes Prevention Programme. Diabetes Res Clin Pract 2007;76(2):215–218. PMID 16982107.
22. Snehalatha C, Mary S, Selvam S, Sathish Kumar CK, Shetty SB, Nanditha A, Ramachandran A. Changes in insulin secretion and insulin sensitivity in relation to the glycemic outcomes in subjects with impaired glucose tolerance in the Indian Diabetes Prevention Programme-1 (IDPP-1). Diabetes Care 2009;32(10):1796–1801. PMID 19587369. doi 10.2337/dc09-0676.
23. Yajnik CS, Fall CHD, Coyaji KJ, et al. Neonatal anthropometry: the thin–fat Indian baby. The Pune Maternal Nutrition Study. 2003. PMID 12586996.
24. Nomura SO, Bhatia HS, Garg PK, Karger AB, Guan W, Cao J, Shapiro MD, Tsai MY. Lipoprotein(a), high-sensitivity C-reactive protein, homocysteine and cardiovascular disease in the Multi-Ethnic Study of Atherosclerosis. Am J Prev Cardiol 2025;21:100903. PMID 39802678.
25. Role of lipoprotein(a) in atherosclerotic cardiovascular disease in South Asian individuals. J Am Heart Assoc 2025. PMID 40654252.
26. Vispute SS, Smith JD, LeCheminant JD, Hurley KS. The effect of abdominal exercise on abdominal fat. J Strength Cond Res 2011;25(9):2559–2564. PMID 21804427. doi 10.1519/JSC.0b013e3181fb4a46.
27. Increasing weight loss attenuates the preferential loss of visceral compared with subcutaneous fat: a predicted result of an allometric model. Int J Obes 2008.

Weight loss, energy balance and adherence

28. Hall KD, Sacks G, Chandramohan D, Chow CC, Wang YC, Gortmaker SL, Swinburn BA. Quantification of the effect of energy imbalance on bodyweight. Lancet 2011;378(9793):826–837. PMID 21872751. doi 10.1016/S0140-6736(11)60812-X.
29. Gardner CD, Trepanowski JF, Del Gobbo LC, Hauser ME, Rigdon J, Ioannidis JPA, Desai M, King AC. Effect of low-fat vs low-carbohydrate diet on 12-month weight loss in overweight adults and the association with genotype pattern or insulin secretion: the DIETFITS randomized clinical trial. JAMA 2018;319(7):667–679. PMID 29466592. doi 10.1001/jama.2018.0245.
30. Association of dietary adherence and dietary quality with weight loss success among those following low-carbohydrate and low-fat diets: a secondary analysis of DIETFITS. Am J Clin Nutr 2023. doi 10.1016/j.ajcnut.2023.05.026.
31. Sacks FM, Bray GA, Carey VJ, Smith SR, Ryan DH, Anton SD, McManus K, Champagne CM, Bishop LM, Laranjo N, Leboff MS, Rood JC, de Jonge L, Greenway FL, Loria CM, Obarzanek E, Williamson DA. Comparison of weight-loss diets with different compositions of fat, protein, and carbohydrates (POUNDS LOST). N Engl J Med 2009;360(9):859–873. PMID 19246357. doi 10.1056/NEJMoa0804748.
32. Johnston BC, Kanters S, Bandayrel K, Wu P, Naji F, Siemieniuk RA, Ball GD, Busse JW, Thorlund K, Guyatt G, Jansen JP, Mills EJ. Comparison of weight loss among named diet programs in overweight and obese adults: a meta-analysis. JAMA 2014;312(9):923–933. PMID 25182101.
33. Leidy HJ, Clifton PM, Astrup A, Wycherley TP, Westerterp-Plantenga MS, Luscombe-Marsh ND, Woods SC, Mattes RD. The role of protein in weight loss and maintenance. Am J Clin Nutr 2015;101(6):1320S–1329S. PMID 25926512. doi 10.3945/ajcn.114.084038.
34. Helms ER, Zinn C, Rowlands DS, Brown SR. A systematic review of dietary protein during caloric restriction in resistance trained lean athletes: a case for higher intakes. Int J Sport Nutr Exerc Metab 2014;24(2):127–138. doi 10.1123/ijsnem.2013-0054.
35. Rolls BJ. The relationship between dietary energy density and energy intake. Physiol Behav 2009;97(5):609–615. PMID 19303887. PMCID PMC4182946. doi 10.1016/j.physbeh.2009.03.011.
36. Lowe DA, Wu N, Rohdin-Bibby L, et al. Effects of time-restricted eating on weight loss and other metabolic parameters in women and men with overweight and obesity: the TREAT randomized clinical trial. JAMA Intern Med 2020;180(11):1491–1499. PMID 32986097. doi 10.1001/jamainternmed.2020.4153.
37. Liu D, Huang Y, Huang C, Yang S, Wei X, Zhang P, Guo D, Lin J, Xu B, Li C, He H, He J, Liu S, Shi L, Xue Y, Zhang H. Calorie restriction with or without time-restricted eating in weight loss. N Engl J Med 2022;386(16):1495–1504. PMID 35443107. doi 10.1056/NEJMoa2114833.
38. Fothergill E, Guo J, Howard L, Kerns JC, Knuth ND, Brychta R, Chen KY, Skarulis MC, Walter M, Walter PJ, Hall KD. Persistent metabolic adaptation 6 years after "The Biggest Loser" competition. Obesity (Silver Spring) 2016;24(8):1612–1619. PMID 27136388. PMCID PMC4989512. doi 10.1002/oby.21538.
39. Hall KD, Ayuketah A, Brychta R, Cai H, Cassimatis T, Chen KY, Chung ST, Costa E, Courville A, Darcey V, Fletcher LA, Forde CG, Gharib AM, Guo J, Howard R, Joseph PV, McGehee S, Ouwerkerk R, Raisinger K, Rozga I, Stagliano M, Walter M, Walter PJ, Yang S, Zhou M. Ultra-processed diets cause excess calorie intake and weight gain: an inpatient randomized controlled trial of ad libitum food intake. Cell Metab 2019;30(1):67–77.e3. PMID 31105044. doi 10.1016/j.cmet.2019.05.008.
40. Chen Z, Khandpur N, Desjardins C, et al. Ultra-processed food consumption and risk of type 2 diabetes: three large prospective U.S. cohort studies. Diabetes Care 2023;46(7):1335–1344. PMID 36854188. doi 10.2337/dc22-1993.

Diabetes prevention and remission

41. Knowler WC, Barrett-Connor E, Fowler SE, Hamman RF, Lachin JM, Walker EA, Nathan DM; Diabetes Prevention Program Research Group. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med 2002;346(6):393–403.
42. Tuomilehto J, Lindström J, Eriksson JG, Valle TT, Hämäläinen H, Ilanne-Parikka P, Keinänen-Kiukaanniemi S, Laakso M, Louheranta A, Rastas M, Salminen V, Uusitupa M; Finnish Diabetes Prevention Study Group. Prevention of type 2 diabetes mellitus by changes in lifestyle among subjects with impaired glucose tolerance. N Engl J Med 2001;344(18):1343–1350. PMID 11333990. doi 10.1056/NEJM200105033441801.
43. Ramachandran A, Snehalatha C, Mary S, Mukesh B, Bhaskar AD, Vijay V; Indian Diabetes Prevention Programme. The Indian Diabetes Prevention Programme shows that lifestyle modification and metformin prevent type 2 diabetes in Asian Indian subjects with impaired glucose tolerance (IDPP-1). Diabetologia 2006;49(2):289–297. PMID 16391903. doi 10.1007/s00125-005-0097-z.
44. Thankappan KR, Sathish T, Tapp RJ, Shaw JE, Lotfaliany M, Wolfe R, Absetz P, Mathews E, Aziz Z, Williams ED, Fisher EB, Zimmet PZ, Mahal A, Balachandran S, D'Esposito F, Sajeev P, Thomas E, Oldenburg B. A peer-support lifestyle intervention for preventing type 2 diabetes in India: a cluster-randomized controlled trial of the Kerala Diabetes Prevention Program. PLoS Med 2018;15(6):e1002575. PMID 29874236. doi 10.1371/journal.pmed.1002575.
45. Jeemon P, Haregu T, Sivasubramonian S, Thoniparambil Ravindranathanpillai L, Jasper S, Kapoor N, Thirunavukkarasu S, Tapp RJ, Mahal A, Absetz P, Fisher EB, Thankappan KR, Oldenburg B. Effects of a peer-support lifestyle intervention on diabetes incidence in India (K-DPP): 9-year follow-up of a cluster-randomised, controlled trial. Lancet Glob Health 2026;14:103927. PMID 41997166. doi 10.1016/S2214-109X(26)00057-4.
46. Ravindranath R, Oldenburg B, Balachandran S, Mini GK, Mahat K, Sathish T, Thankappan KR. Scale-up of the Kerala Diabetes Prevention Program (K-DPP) in Kerala, India: implementation evaluation findings. Transl Behav Med 2020;10(1):5–12. PMID 32011723. doi 10.1093/tbm/ibz197.
47. Weber MB, Ranjani H, Staimez LR, et al. The stepwise approach to diabetes prevention: results from the D-CLIP randomized controlled trial. Diabetes Care 2016. PMID 27504014.
48. Lean ME, Leslie WS, Barnes AC, Brosnahan N, Thom G, McCombie L, Peters C, Zhyzhneuskaya S, Al-Mrabeh A, Hollingsworth KG, Rodrigues AM, Rehackova L, Adamson AJ, Sniehotta FF, Mathers JC, Ross HM, McIlvenna Y, Stefanetti R, Trenell M, Welsh P, Kean S, et al. Primary care-led weight management for remission of type 2 diabetes (DiRECT): an open-label, cluster-randomised trial. Lancet 2018;391(10120):541–551. PMID 29221645. doi 10.1016/S0140-6736(17)33102-1.
49. Lean MEJ, Leslie WS, Barnes AC, et al. Durability of a primary care-led weight-management intervention for remission of type 2 diabetes: 2-year results of the DiRECT open-label, cluster-randomised trial. Lancet Diabetes Endocrinol 2019;7(5):344–355. PMID 30852132. doi 10.1016/S2213-8587(19)30068-3.
50. Lean ME, Leslie WS, Barnes AC, Brosnahan N, Thom G, McCombie L, Kelly T, Irvine K, Peters C, Zhyzhneuskaya S, Hollingsworth KG, Adamson AJ, Sniehotta FF, Mathers JC, McIlvenna Y, Welsh P, McConnachie A, McIntosh A, Sattar N, Taylor R. 5-year follow-up of the randomised Diabetes Remission Clinical Trial (DiRECT) of continued support for weight loss maintenance in the UK: an extension study. Lancet Diabetes Endocrinol 2024;12(4):233–246. PMID 38423026. doi 10.1016/S2213-8587(23)00385-6.
51. Riddle MC, Cefalu WT, Evans PH, Gerstein HC, Nauck MA, Oh WK, Rothberg AE, le Roux CW, Rubino F, Schauer P, Taylor R, Twenefour D. Consensus report: definition and interpretation of remission in type 2 diabetes. Diabetes Care 2021. PMID 34462270. doi 10.2337/dci21-0034. Published simultaneously as Diabetologia 2021;64(11):2359–2366 (PMID 34458934; doi 10.1007/s00125-021-05542-z) and J Clin Endocrinol Metab 2022;107(1):1–9 (PMID 34459898; doi 10.1210/clinem/dgab585).
52. Taylor R. Aetiology of type 2 diabetes: an experimental medicine odyssey. Diabetologia 2025. doi 10.1007/s00125-025-06428-0.
53. Lim EL, Hollingsworth KG, Aribisala BS, Chen MJ, Mathers JC, Taylor R. Reversal of type 2 diabetes: normalisation of beta cell function in association with decreased pancreas and liver triacylglycerol (Counterpoint). Diabetologia 2011;54(10):2506–2514.
54. Steven S, Hollingsworth KG, Al-Mrabeh A, et al. Very low-calorie diet and 6 months of weight stability in type 2 diabetes: pathophysiological changes in responders and nonresponders (Counterbalance). Diabetes Care 2016;39(5):808–815.
55. Taylor R, Barnes AC, Hollingsworth KG, et al. Aetiology of type 2 diabetes in people with a 'normal' body mass index: testing the personal fat threshold hypothesis (ReTUNE). Clin Sci (Lond) 2023;137(16):1333–1346. doi 10.1042/CS20230586.
56. Nagi D, Hambling C, Taylor R. Remission of type 2 diabetes: a position statement from the Association of British Clinical Diabetologists and the Primary Care Diabetes Society. Br J Diabetes 2019;19:73–76.
57. Iyengar S, Kaur J, Singh A, Sahay I, Kumar A, Kolke S, Raut M, Singh RK. Ten-year medication-free remission of type 2 diabetes in a South Asian male using a culturally adapted low-carbohydrate diet: an N-of-1 longitudinal study. Front Nutr 2026;13:1718156. PMID 41847235. doi 10.3389/fnut.2026.1718156. A single case; illustrative only, never evidence of effect size.

Rice, grains and glycaemic response

58. Atkinson FS, Brand-Miller JC, Foster-Powell K, Buyken AE, Goletzke J. International tables of glycemic index and glycemic load values 2021: a systematic review. Am J Clin Nutr 2021;114(5):1625–1632. PMID 34258626. doi 10.1093/ajcn/nqab233.
59. Atkinson FS, Foster-Powell K, Brand-Miller JC. International tables of glycemic index and glycemic load values: 2008. Diabetes Care 2008;31(12):2281–2283. PMID 18835944. doi 10.2337/dc08-1239. Citation verified; the individual food rows for parboiled rice, basmati, cassava, plantain and ragi were not retrieved.
60. Boers HM, Seijen ten Hoorn J, Mela DJ. A systematic review of the influence of rice characteristics and processing methods on postprandial glycaemic and insulinaemic responses. Br J Nutr 2015;114(7):1035–1045. doi 10.1017/S0007114515001841.
61. Hu EA, Pan A, Malik V, Sun Q. White rice consumption and risk of type 2 diabetes: meta-analysis and systematic review. BMJ 2012;344:e1454. PMID 22422870. PMCID PMC3307808. doi 10.1136/bmj.e1454.
62. Bhavadharini B, Mohan V, Dehghan M, Rangarajan S, Swaminathan S, … Yusuf S. White rice intake and incident diabetes: a study of 132,373 participants in 21 countries (PURE). Diabetes Care 2020;43(11):2643–2650. PMID 32873587. PMCID PMC7576435. doi 10.2337/dc19-2335.
63. Malik VS, Sudha V, Wedick NM, et al. Substituting brown rice for white rice on diabetes risk factors in India: a randomised controlled trial. Br J Nutr 2019;121(12):1389–1397. PMID 31006420. doi 10.1017/S000711451900076X.
64. Mohan V, Spiegelman D, Sudha V, Gayathri R, Hong B, Praseena K, Anjana RM, Wedick NM, Arumugam K, Malik V, Ramachandran S, Bai MR, Henry JK, Hu FB, Willett W, Krishnaswamy K. Effect of brown rice, white rice, and brown rice with legumes on blood glucose and insulin responses in overweight Asian Indians: a randomized controlled trial. Diabetes Technol Ther 2014;16(5):317–325. PMID 24447043. doi 10.1089/dia.2013.0259.
65. Shobana S, Lakshmipriya N, Bai MR, Gayathri R, Ruchi V, Sudha V, Malleshi NG, Krishnaswamy K, Henry CK, Anjana RM, Unnikrishnan R, Mohan V. Even minimal polishing of an Indian parboiled brown rice variety leads to increased glycemic responses. Asia Pac J Clin Nutr 2017;26(5):829–836. PMID 28802292. doi 10.6133/apjcn.112016.08.
66. Shobana S, Kumari SR, Malleshi NG, Ali SZ. Glycemic response of rice, wheat and finger millet based diabetic food formulations in normoglycemic subjects. Int J Food Sci Nutr 2007;58(5):363–372. PMID 17558728. doi 10.1080/09637480701252229.
67. Anitha S, Kane-Potaka J, Tsusaka TW, Botha R, Rajendran A, Givens DI, Parasannanavar DJ, Subramaniam K, Prasad KDV, Vetriventhan M, Bhandari RK. A systematic review and meta-analysis of the potential of millets for managing and reducing the risk of developing diabetes mellitus. Front Nutr 2021;8:687428. doi 10.3389/fnut.2021.687428. Funded by the Smart Food Endowment fund, a millet-promotion programme; a before-and-after synthesis of heterogeneous studies rather than a pooled analysis of randomised comparisons.
68. Sonia S, Witjaksono F, Ridwan R. Effect of cooling of cooked white rice on resistant starch content and glycemic response. Asia Pac J Clin Nutr 2015;24(4):620–625. PMID 26693746. doi 10.6133/apjcn.2015.24.4.13.
69. Strozyk S, Rogowicz-Frontczak A, Pilaciński S, LeThanh-Blicharz J, Koperska A, Zozulińska-Ziółkiewicz D. Influence of resistant starch resulting from the cooling of rice on postprandial glycemia in type 1 diabetes. Nutr Diabetes 2022;12(1):21. PMID 35429987. PMCID PMC9013350. doi 10.1038/s41387-022-00196-1.
70. Zafar MI, Mills KE, Zheng J, Regmi A, Hu SQ, Gou L, Chen LL. Low-glycemic index diets as an intervention for diabetes: a systematic review and meta-analysis. Am J Clin Nutr 2019;110(4):891–902. PMID 31374573. doi 10.1093/ajcn/nqz149.
71. Ojo O, Ojo OO, Adebowale F, Wang XH. The effect of dietary glycaemic index on glycaemia in patients with type 2 diabetes: a systematic review and meta-analysis of randomized controlled trials. Nutrients 2018;10(3):373. PMID 29562676. doi 10.3390/nu10030373.
72. Pavithran N, Kumar H, Menon AS, Pillai GK, Sundaram KR, Ojo O. South Indian cuisine with low glycemic index ingredients reduces cardiovascular risk factors in subjects with type 2 diabetes. Int J Environ Res Public Health 2020;17(17):6232. PMCID PMC7504299. doi 10.3390/ijerph17176232. The one Kerala-specific, recipe-specific randomised dietary intervention with measured glycaemic index values for Kerala staples. Author list to be confirmed against the published paper before print.
73. Shishehbor F, Mansoori A, Shirani F. Vinegar consumption can attenuate postprandial glucose and insulin responses; a systematic review and meta-analysis of clinical trials. Diabetes Res Clin Pract 2017;127:1–9. PMID 28292654. doi 10.1016/j.diabres.2017.01.021.
74. Shahmohammadi F, Khosroshahi RA, Derakhshanian H, Mohammadi H. Vinegar consumption and health: an umbrella review of meta-analyses of randomized controlled trials. Food Sci Nutr 2026;14(5):e71849. PMID 42110393. doi 10.1002/fsn3.71849.

Coconut, fats and lipids

75. Neelakantan N, Seah JYH, van Dam RM. The effect of coconut oil consumption on cardiovascular risk factors: a systematic review and meta-analysis of clinical trials. Circulation 2020;141(10):803–814. PMID 31928080. doi 10.1161/CIRCULATIONAHA.119.043052.
76. Sacks FM. Coconut oil and heart health: fact or fiction? Circulation 2020;141(10):815–817. PMID 31928069. doi 10.1161/CIRCULATIONAHA.119.044687. Invited editorial commentary on reference 75.
77. Eyres L, Eyres MF, Chisholm A, Brown RC. Coconut oil consumption and cardiovascular risk factors in humans. Nutr Rev 2016;74(4):267–280. PMID 26946252. PMCID PMC4892314. doi 10.1093/nutrit/nuw002.
78. Sacks FM, Lichtenstein AH, Wu JHY, Appel LJ, Creager MA, Kris-Etherton PM, Miller M, Rimm EB, Rudel LL, Robinson JG, Stone NJ, Van Horn LV; American Heart Association. Dietary fats and cardiovascular disease: a presidential advisory from the American Heart Association. Circulation 2017;136(3):e1–e23. PMID 28620111. doi 10.1161/CIR.0000000000000510.
79. Khaw KT, Sharp SJ, Finikarides L, Afzal I, Lentjes M, Luben R, Forouhi NG. Randomised trial of coconut oil, olive oil or butter on blood lipids and other cardiovascular risk factors in healthy men and women. BMJ Open 2018;8(3):e020167. PMID 29511019. doi 10.1136/bmjopen-2017-020167. NCT03105947.
80. Ekanayaka RAI, de Silva PGSM, Ekanayaka MKI, Jayathilake WMM, Pathirana RPMMR, Amaratunga YN, De Silva PJD, Perera B. Effect of different forms of coconut on the lipid profile in normal free-living healthy subjects: a randomized controlled trial (Phase II). Glob Epidemiol 2024;7:100138. PMID 38357247. doi 10.1016/j.gloepi.2024.100138. Unblinded, single country, no-treatment control rather than an isocaloric comparator.
81. Hewlings S. Coconuts and health: different chain lengths of saturated fats require different consideration. J Cardiovasc Dev Dis 2020;7(4):59. PMID 33348586. PMCID PMC7766932. doi 10.3390/jcdd7040059. A narrative review arguing the pro-coconut case; cited in this book as a position, not as evidence.
82. Dayrit FM. The properties of lauric acid and their significance in coconut oil. J Am Oil Chem Soc 2015;92:1–15. doi 10.1007/s11746-014-2562-7. Full text was not obtained; no figure from this paper is quoted anywhere in this book.
83. Mensink RP, Zock PL, Kester AD, Katan MB. Effects of dietary fatty acids and carbohydrates on the ratio of serum total to HDL cholesterol and on serum lipids and apolipoproteins: a meta-analysis of 60 controlled trials. Am J Clin Nutr 2003;77(5):1146–1155.
84. Hooper L, Martin N, Jimoh OF, Kirk C, Foster E, Abdelhamid AS. Reduction in saturated fat intake for cardiovascular disease. Cochrane Database Syst Rev 2020;8:CD011737. PMID 32827219. doi 10.1002/14651858.CD011737.pub3.
85. Jovanovski E, Yashpal S, Komishon A, Zurbau A, Blanco Mejia S, Ho HVT, Li D, Sievenpiper J, Duvnjak L, Vuksan V. Effect of psyllium (Plantago ovata) fiber on LDL cholesterol and alternative lipid targets, non-HDL cholesterol and apolipoprotein B: a systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr 2018;108(5):922–932. PMID 30239559. doi 10.1093/ajcn/nqy115.
86. Olson BH, Anderson SM, Becker MP, Anderson JW, Hunninghake DB, Jenkins DJ, LaRosa JC, Rippe JM, Roberts DC, Stoy DB, Summerbell CD, Truswell AS, Wolever TM, Morris DH, Fulgoni VL. Psyllium-enriched cereals lower blood total cholesterol and LDL cholesterol, but not HDL cholesterol, in hypercholesterolemic adults: results of a meta-analysis. J Nutr 1997;127(10):1973–1980. PMID 9311953.
87. Chiavaroli L, Nishi SK, Khan TA, Braunstein CR, Glenn AJ, Blanco Mejia S, Rahelić D, Kahleová H, Salas-Salvadó J, Jenkins DJA, Kendall CWC, Sievenpiper JL. Portfolio dietary pattern and cardiovascular disease: a systematic review and meta-analysis of controlled trials. Prog Cardiovasc Dis 2018;61(1):43–53. PMID 29807048. doi 10.1016/j.pcad.2018.05.004.

Pulses and legumes

88. Jenkins DJA, Kendall CWC, Augustin LSA, Mitchell S, et al. Effect of legumes as part of a low glycemic index diet on glycemic control and cardiovascular risk factors in type 2 diabetes mellitus: a randomized controlled trial. Arch Intern Med 2012;172(21):1653–1660. PMID 23089999. doi 10.1001/2013.jamainternmed.70.
89. Ha V, Sievenpiper JL, de Souza RJ, Jayalath VH, Mirrahimi A, Agarwal A, Chiavaroli L, Blanco Mejia S, Sacks FM, Di Buono M, Bernstein AM, Leiter LA, Kris-Etherton PM, Vuksan V, Bazinet RP, Josse RG, Beyene J, Kendall CW, Jenkins DJ. Effect of dietary pulse intake on established therapeutic lipid targets for cardiovascular risk reduction: a systematic review and meta-analysis of randomized controlled trials. CMAJ 2014;186(8):E252–E262. PMID 24710915. PMCID PMC4016088. doi 10.1503/cmaj.131727.
90. Kim SJ, de Souza RJ, Choo VL, Ha V, et al. Effects of dietary pulse consumption on body weight: a systematic review and meta-analysis of randomized controlled trials. Am J Clin Nutr 2016;103(5):1213–1223. PMID 27030531. doi 10.3945/ajcn.115.124677.
91. Viguiliouk E, Blanco Mejia S, Kendall CWC, Sievenpiper JL. Can pulses play a role in improving cardiometabolic health? Evidence from systematic reviews and meta-analyses. Ann N Y Acad Sci 2017;1392(1):43–57. doi 10.1111/nyas.13312. Citation verified; pooled numbers were not extracted and none is quoted in this book.
92. Oli P, Joshi K, Punetha S. Traditional uses, phytochemistry, pharmacology, and nutraceutical potential of horse gram (Macrotyloma uniflorum): a systematic review. J Food Sci 2024;89(12):8102–8127. PMID 39656760. doi 10.1111/1750-3841.17594.

Fruits, vegetables and tubers

93. Rao AG, Naik KS, Unnikrishnan AG, Joseph J. Efficacy of green jackfruit flour as a medical nutrition therapy replacing rice or wheat in patients with type 2 diabetes mellitus: a randomized, double-blind, placebo-controlled study. Nutr Diabetes 2021;11(1):18. PMID 34127645. doi 10.1038/s41387-021-00161-4. CTRI/2019/05/019417. Industry-funded; the product's inventor and commercial principal is among the authors; n = 40, 12 weeks, single centre.
94. Forkum AT, Wung AE, Kelese MT, Ndum CM, Lontum A, Kamga EB, Nsaikila MN, Okwen PM. Safety of cassava and cassava-based products: a systematic review. Front Sustain Food Syst 2025;9:1497609. doi 10.3389/fsufs.2025.1497609.
95. Yuan D, Zhang Y, Chen X, Xu F, Zhu K, Wang J, Zhang Y. Physicochemical, structural, and digestive properties of green banana starch from five Chinese mutant banana species. Foods 2025;14(4):706. PMID 40002149. doi 10.3390/foods14040706. Values are for isolated starch, not for whole banana.
96. Rammohan Y, Shuprajhaa T, Kumar PS, Vasudevan V, Sivaprasad M, Prasad TNVKV, Krishna VNPS, Sireesha Y. Impact of maturity stages and modification processes on resistant starch and starch properties of green banana flour and its glycaemic response. Int J Biol Macromol 2025;311(Pt 3):143881. PMID 40328390. doi 10.1016/j.ijbiomac.2025.143881.
97. Ooi CP, Yassin Z, Hamid T-A. Momordica charantia for type 2 diabetes mellitus. Cochrane Database Syst Rev 2012, Issue 8, Art. No. CD007845. doi 10.1002/14651858.CD007845.pub3. Earlier version: PMID 20166099; doi 10.1002/14651858.CD007845.pub2.
98. Yin RV, Lee NC, Hirpara H, Phung OJ. The effect of bitter melon (Momordica charantia) in patients with diabetes mellitus: a systematic review and meta-analysis. Nutr Diabetes 2014;4:e145. doi 10.1038/nutd.2014.42.
99. Sereno AB, Dayane Pinto C, Antunes Andrade F, Aparecida Bertolazo da Silva M, Carvalho Garcia A, Carneiro Hecke Krüger C, José de Messias Reason I. Effects of okra (Abelmoschus esculentus (L.) Moench) on glycemic markers in animal models of diabetes: a systematic review. J Ethnopharmacol 2022;298:115544. PMID 35963420. doi 10.1016/j.jep.2022.115544. Rodent studies only.
100. Crișan D, Gavrilaș L, Păltinean R, Frumuzachi O, Mocan A, Crișan G. Effects of Moringa oleifera Lam. supplementation on cardiometabolic outcomes: a meta-analysis of randomized controlled trials with GRADE assessment. Nutrients 2025;17(22):3501. PMID 41305552. doi 10.3390/nu17223501.

Fish and omega-3

101. Manson JE, Cook NR, Lee I-M, et al. Marine n−3 fatty acids and prevention of cardiovascular disease and cancer (VITAL). N Engl J Med 2019;380(1):23–32. PMID 30415637. doi 10.1056/NEJMoa1811403. Primary-endpoint hazard ratios were not retrieved and none is quoted.
102. Bowman L, Mafham M, Wallendszus K, et al. Effects of n−3 fatty acid supplements in diabetes mellitus (ASCEND). N Engl J Med 2018;379(16):1540–1550. PMID 30146932. doi 10.1056/NEJMoa1804989. Primary-endpoint hazard ratios were not retrieved and none is quoted.
103. Bhatt DL, Steg PG, Miller M, et al. Cardiovascular risk reduction with icosapent ethyl for hypertriglyceridemia (REDUCE-IT). N Engl J Med 2019;380:11–22. doi 10.1056/NEJMoa1812792.
104. Nicholls SJ, Lincoff AM, Garcia M, et al. Effect of high-dose omega-3 fatty acids vs corn oil on major adverse cardiovascular events in patients at high cardiovascular risk: the STRENGTH randomized clinical trial. JAMA 2020;324(22):2268–2280. PMID 33190147. doi 10.1001/jama.2020.22258.
105. Skulas-Ray AC, Wilson PWF, Harris WS, et al.; American Heart Association. Omega-3 fatty acids for the management of hypertriglyceridemia: a science advisory from the American Heart Association. Circulation 2019;140:e673–e691. doi 10.1161/CIR.0000000000000709.
106. Abdelhamid AS, Brown TJ, Brainard JS, et al. Omega-3 fatty acids for the primary and secondary prevention of cardiovascular disease. Cochrane Database Syst Rev 2020;(3):CD003177. doi 10.1002/14651858.CD003177.pub5. Citation verified; risk ratios were not extracted and none is quoted.

Spices and botanicals

107. Pathomwichaiwat T, Jinatongthai P, Prommasut N, Ampornwong K, Rattanavipanon W, Nathisuwan S, Thakkinstian A. Effects of turmeric (Curcuma longa) supplementation on glucose metabolism in diabetes mellitus and metabolic syndrome: an umbrella review and updated meta-analysis. PLOS ONE 2023;18(7):e0288997. doi 10.1371/journal.pone.0288997. All fourteen systematic reviews appraised rated critically low on AMSTAR-2.
108. Shoba G, Joy D, Joseph T, Majeed M, Rajendran R, Srinivas PS. Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers. Planta Med 1998;64(4):353–356. PMID 9619120. doi 10.1055/s-2006-957450. One small pharmacokinetic study; author M. Majeed is the founder of Sabinsa Corporation, which markets a standardised piperine product.
109. Simental-Mendía LE, Pirro M, Gotto AM Jr, Banach M, Atkin SL, Majeed M, Sahebkar A. Lipid-modifying activity of curcuminoids: a systematic review and meta-analysis of randomized controlled trials. Crit Rev Food Sci Nutr 2019;59(7):1178–1187. PMID 29185808. doi 10.1080/10408398.2017.1396201. Sabinsa Corporation affiliation among the authors.
110. Bahari H, Jazinaki MS, Asadi Z, Golafrouz H. Curcumin/turmeric supplementation on glycemic control in adults with prediabetes and type 2 diabetes: a systematic review and dose–response meta-analysis. Food Sci Nutr 2026;14(4):e71748. PMID 42005325. doi 10.1002/fsn3.71748.
111. de Melo ISV, dos Santos AF, Bueno NB. Curcumin or combined curcuminoids are effective in lowering the fasting blood glucose concentrations of individuals with dysglycemia: systematic review and meta-analysis of randomized controlled trials. Pharmacol Res 2018;128:137–144. PMID 28928074. doi 10.1016/j.phrs.2017.09.010.
112. Halegoua-DeMarzio D, Navarro V, Ahmad J, Avula B, Barnhart H, Barritt AS, Bonkovsky HL, Fontana RJ, Ghabril MS, Hoofnagle JH, Khan IA, Kleiner DE, Phillips E, Stolz A, Vuppalanchi R. Liver injury associated with turmeric — a growing problem: ten cases from the Drug-Induced Liver Injury Network [DILIN]. Am J Med 2023;136(2):200–206. PMID 36252717. doi 10.1016/j.amjmed.2022.09.026.
113. Jiao Y, Wilkinson J 4th, Di X, et al. Curcumin, a cancer chemopreventive and chemotherapeutic agent, is a biologically active iron chelator. Blood 2009;113(2):462–469.
114. Forsyth JE, Mistree D, Nash E, Angrish M, Luby SP. Evidence of turmeric adulteration with lead chromate across South Asia. Sci Total Environ 2024;949:175003. doi 10.1016/j.scitotenv.2024.175003.
115. Forsyth JE, Baker M, Nurunnahar S, Islam S, Islam MS, Islam T, Plambeck E, Winch PJ, Mistree D, Luby SP, Rahman M. Food safety policy enforcement and associated actions reduce lead chromate adulteration in turmeric across Bangladesh. Environ Res 2023;232:116328. PMID 37286126. doi 10.1016/j.envres.2023.116328.
116. Neelakantan N, Narayanan M, de Souza RJ, van Dam RM. Effect of fenugreek (Trigonella foenum-graecum L.) intake on glycemia: a meta-analysis of clinical trials. Nutr J 2014;13:7. PMID 24438170. doi 10.1186/1475-2891-13-7.
117. Chehregosha F, Fakhr L, Tarighat-Esfanjani A, Maghsoumi-Norouzabad L. The effects of fenugreek (Trigonella foenum-graecum) seed on glycemic parameters: an updated systematic review and meta-analysis of randomized controlled trials. Avicenna J Phytomed 2025;15(6):1677–1699. PMID 41509111. doi 10.22038/ajp.2025.26043.
118. Kim et al. The effect of fenugreek in type 2 diabetes and prediabetes: a systematic review and meta-analysis of randomized controlled trials. Int J Mol Sci 2023;24(18):13999. PMID 37762302. doi 10.3390/ijms241813999.
119. Shakil S, Akhtar SE, Ali A, et al. Enhancing glycaemic control and promoting cardiovascular health: the therapeutic potential of Trigonella foenum-graecum in diabetic patients — a systematic review and meta-analysis. Ann Med Surg 2024;86(6):3460–3467. PMID 38846904. doi 10.1097/MS9.0000000000001750. The published conclusion states a "2–5 mg" dose, evidently a typographical error for grams; cited here for direction of effect only, not for dose.
120. Heshmat-Ghahdarijani K, Mashayekhiasl N, Amerizadeh A, Teimouri Jervekani Z, Sadeghi M. Effect of fenugreek consumption on serum lipid profile: a systematic review and meta-analysis. Phytother Res 2020;34(9):2230–2245. PMID 32385866. doi 10.1002/ptr.6690.
121. Sauvaire Y, Petit P, Broca C, Manteghetti M, Baissac Y, Fernandez-Alvarez J, Gross R, Roye M, Leconte A, Gomis R, Ribes G. 4-Hydroxyisoleucine: a novel amino acid potentiator of insulin secretion. Diabetes 1998;47(2):206–210. PMID 9519714. doi 10.2337/diab.47.2.206. Isolated-islet pharmacology, not a human outcome.
122. Kassaian N, Azadbakht L, Forghani B, Amini M. Effect of fenugreek seeds on blood glucose and lipid profiles in type 2 diabetic patients. Int J Vitam Nutr Res 2009;79(1):34–39. PMID 19839001. doi 10.1024/0300-9831.79.1.34. Eleven participants in the positive arm; unreplicated.
123. Khan TM, Wu DB, Dolzhenko AV. Effectiveness of fenugreek as a galactagogue: a network meta-analysis. Phytother Res 2018;32(3):402–412. PMID 29193352. doi 10.1002/ptr.5972.
124. Pages-Rebull J, Sagristà G, Pérez-Ràfols C, Serrano N, Díaz-Cruz JM. Application of HPLC-UV combined with chemometrics for the detection and quantification of 'true cinnamon' adulteration. Talanta 2024;271:125676. PMID 38266436. doi 10.1016/j.talanta.2024.125676.
125. Leach MJ, Kumar S. Cinnamon for diabetes mellitus. Cochrane Database Syst Rev 2012;(9):CD007170. PMID 22972104. doi 10.1002/14651858.CD007170.pub2.
126. Akilen R, Tsiami A, Devendra D, Robinson N. Cinnamon in glycaemic control: systematic review and meta analysis. Clin Nutr 2012;31(5):609–615. PMID 22579946. doi 10.1016/j.clnu.2012.04.003.
127. Huang FY, Deng T, Meng LX, Ma XL. Dietary ginger as a traditional therapy for blood sugar control in patients with type 2 diabetes mellitus: a systematic review and meta-analysis. Medicine (Baltimore) 2019;98(13):e15054. PMID 30921234. doi 10.1097/MD.0000000000015054.
128. Salih AK, Alwan AH, Khadim M, et al. Effect of ginger (Zingiber officinale) intake on human serum lipid profile: systematic review and meta-analysis. Phytother Res 2023;37(6):2472–2483. PMID 36786398. doi 10.1002/ptr.7769.
129. Hasani H, Arab A, Hadi A, Pourmasoumi M, Ghavami A, Miraghajani M. Does ginger supplementation lower blood pressure? A systematic review and meta-analysis of clinical trials. Phytother Res 2019;33(6):1639–1647. PMID 30972845. doi 10.1002/ptr.6362. Six small trials; I² = 89.8% for systolic pressure.
130. Lu C, Chen X, Yan X, He J, Nie Z. The preventive and relieving effects of ginger on postoperative nausea and vomiting: a systematic review and meta-analysis of randomized controlled trials. Int J Nurs Stud 2022;125:104094. PMID 34700257. doi 10.1016/j.ijnurstu.2021.104094.
131. Ried K. Garlic lowers blood pressure in hypertensive subjects, improves arterial stiffness and gut microbiota: a review and meta-analysis. Exp Ther Med 2020;19(2):1472–1478. PMID 32010325. doi 10.3892/etm.2019.8374. Single-author review; the author's garlic research programme is closely associated with a commercial aged garlic extract. This book quotes reference 132 in preference.
132. Behrouz V, Zahroodi M, Clark CCT, Mir E, Atashi N, Rivaz R. Effects of garlic supplementation on cardiovascular risk factors in adults: a comprehensive updated systematic review and meta-analysis of randomized controlled trials. Nutr Rev 2026;84(1):1–35. PMID 40580481. doi 10.1093/nutrit/nuaf090.
133. Ried K, Toben C, Fakler P. Effect of garlic on serum lipids: an updated meta-analysis. Nutr Rev 2013;71(5):282–299. PMID 23590705. doi 10.1111/nure.12012.
134. Reinhart KM, Talati R, White CM, Coleman CI. The impact of garlic on lipid parameters: a systematic review and meta-analysis. Nutr Res Rev 2009;22(1):39–48. PMID 19555517. doi 10.1017/S0954422409350003.
135. Irandoost P, Lotfi Yagin N, Namazi N, Keshtkar A, Farsi F, Mesri Alamdari N, Vafa M. The effect of capsaicinoids or capsinoids in red pepper on thermogenesis in healthy adults: a systematic review and meta-analysis. Phytother Res 2021;35(3):1358–1377. PMID 33063385. doi 10.1002/ptr.6897.
136. Ludy MJ, Moore GE, Mattes RD. The effects of capsaicin and capsiate on energy balance: critical review and meta-analyses of studies in humans. Chem Senses 2012;37(2):103–121. PMID 22038945. doi 10.1093/chemse/bjr100.
137. Bonaccio M, Di Castelnuovo A, Costanzo S, Ruggiero E, De Curtis A, Persichillo M, Tabolacci C, Facchiano F, Cerletti C, Donati MB, de Gaetano G, Iacoviello L; Moli-sani Study Investigators. Chili pepper consumption and mortality in Italian adults. J Am Coll Cardiol 2019;74(25):3139–3149. PMID 31856971. doi 10.1016/j.jacc.2019.09.068. Observational.
138. Ofori-Asenso R, Mohsenpour MA, Nouri M, Faghih S, Liew D, Mazidi M. Association of spicy chilli food consumption with cardiovascular and all-cause mortality: a meta-analysis of prospective cohort studies. Angiology 2021;72(7):625–632. PMID 33657876. doi 10.1177/0003319721995666. Observational.
139. Iyer UM, Mani UV. Studies on the effect of curry leaves supplementation (Murraya koenigii) on lipid profile, glycated proteins and amino acids in non-insulin-dependent diabetic patients. Plant Foods Hum Nutr 1990;40(4):275–282. PMID 2174154. doi 10.1007/BF02193851.
140. Farooq M, Ul Ain I, Aysha Iftikhar Z, Ubaid M, Asim M, Mushtaq U, Musaed Almutairi S, Ahmed Rasheed R, Chen TW. Investigating the therapeutic potential of aqueous extraction of curry plant (Murraya koenigii) leaves supplementation for the regulation of blood glucose level in type 2 diabetes mellitus in female human subjects. Pak J Pharm Sci 2023;36(2 Special):601–605. PMID 37548196. Low-tier journal; no placebo arm described; interpret cautiously.
141. Nameni G, Moradi Y, Zaroudi M, Jamshidi S. Effect of cardamom supplementation on a number of metabolic factors: a systematic review and meta-analysis. Diabetes Metab Syndr 2022;16(6):102523. PMID 35691204. doi 10.1016/j.dsx.2022.102523. The paper's sign conventions are internally inconsistent; treated in this book as a weak signal only.
142. Baenas I, et al. Effects of cardamom supplementation on lipid profile: a systematic review and meta-analysis of randomized controlled clinical trials. Phytother Res. doi 10.1002/ptr.6543.
143. Stein U, Greyer H, Hentschel H. Nutmeg (myristicin) poisoning — report on a fatal case and a series of cases recorded by a poison information centre. Forensic Sci Int 2001;118(1):87–90. PMID 11343860. doi 10.1016/s0379-0738(00)00369-8.
144. Usui K, Kubota E, Kobayashi H, Fujita Y, Hatanaka K, Kamijo Y, Funayama M, Mimasaka S. Detection of major psychoactive compounds (safrole, myristicin, and elemicin) of nutmeg in human serum via GC-MS/MS using MonoSpin extraction: application in a nutmeg poisoning case. J Pharm Biomed Anal 2023;234:115565. PMID 37453146. doi 10.1016/j.jpba.2023.115565.
145. Rounagh M, Musazadeh V, Hosseininejad-Mohebati A, Falahatzadeh M, Kavyani Z, Rostami RB, Vajdi M. Effects of Nigella sativa supplementation on lipid profiles in adults: an updated systematic review and meta-analysis of randomized controlled trials. Clin Nutr ESPEN 2024;61:168–180. PMID 38777430. doi 10.1016/j.clnesp.2024.03.020. The reported standardised mean differences are implausibly large, which itself signals small-study and publication bias.
146. Onakpoya I, Hung SK, Perry R, Wider B, Ernst E. The use of Garcinia extract (hydroxycitric acid) as a weight loss supplement: a systematic review and meta-analysis of randomised clinical trials. J Obes 2011;2011:509038. PMID 21197150. doi 10.1155/2011/509038.
147. Kothadia JP, Kaminski M, Samant H, Olivier D. Hepatotoxicity associated with use of the weight loss supplement Garcinia cambogia: a case report and review of the literature. Case Rep Hepatol 2018;2018:6483605. doi 10.1155/2018/6483605.
148. Crescioli G, Lombardi N, Bettiol A, et al. Acute liver injury following Garcinia cambogia weight-loss supplementation: case series and literature review. Intern Emerg Med 2018. doi 10.1007/s11739-018-1880-4.
149. Garcinia cambogia, either alone or in combination with green tea, causes moderate to severe liver injury. Clin Gastroenterol Hepatol 2022. doi 10.1016/j.cgh.2021.08.007.
150. Acute liver failure following Garcinia cambogia supplementation. Ann Hepatol. doi 10.1016/j.aohep.2019.07.012.
151. The impact of piperine on the metabolic conditions of patients with NAFLD and early cirrhosis: a randomized double-blind controlled trial. Sci Rep 2024. doi 10.1038/s41598-024-51726-z.

Fermentation and the gut

152. Mukherjee SK, Albury MN, Pederson CS, van Veen AG, Steinkraus KH. Role of Leuconostoc mesenteroides in leavening the batter of idli, a fermented food of India. Appl Microbiol 1965;13(2):227–231. PMID 14325884. doi 10.1128/am.13.2.227-231.1965.
153. Ghosh D, Chattopadhyay P. Preparation of idli batter, its properties and nutritional improvement during fermentation. J Food Sci Technol 2011;48(5):610–615. doi 10.1007/s13197-010-0148-4. Reports riboflavin, thiamine and folate; it reports no vitamin B12, no phytate and no mineral-bioavailability data.
154. Chan M, Larsen N, Baxter H, Jespersen L, Ekinci EI, Howell K. The impact of botanical fermented foods on metabolic syndrome and type 2 diabetes: a systematic review of randomised controlled trials. Nutr Res Rev 2024;37(2):396–415. PMID 37881833. doi 10.1017/S0954422423000252.
155. Wastyk HC, Fragiadakis GK, Perelman D, Dahan D, Merrill BD, Yu FB, Topf M, Gonzalez CG, Van Treuren W, Han S, Robinson JL, Elias JE, Sonnenburg ED, Gardner CD, Sonnenburg JL. Gut-microbiota-targeted diets modulate human immune status. Cell 2021;184(16):4137–4153.e14. PMID 34256014. doi 10.1016/j.cell.2021.06.019. n = 36 healthy adults, 10 weeks, surrogate immune endpoints.
156. Gijsbers L, Ding EL, Malik VS, de Goede J, Geleijnse JM, Soedamah-Muthu SS. Consumption of dairy foods and diabetes incidence: a dose-response meta-analysis of observational studies. Am J Clin Nutr 2016;103(4):1111–1124. PMID 26912494. doi 10.3945/ajcn.115.123216.
157. Feng Y, Zhao Y, Liu J, Huang Z, Yang X, Qin P, et al. Consumption of dairy products and the risk of overweight or obesity, hypertension, and type 2 diabetes mellitus: a dose-response meta-analysis and systematic review of cohort studies. Adv Nutr 2022;13(6):2165–2179. PMID 36047956. doi 10.1093/advances/nmac096.
158. Vijayaganapathi S, Mohanasrinivasan V. [Study of probiotic isolates from palm toddy.] Front Microbiol 2025;16:1625659. Consulted for context on toddy microbiology; no claim in this book rests on it.
159. Velmurugan et al. [Probiotic isolates from toddy.] Nat Prod Res 2025. Consulted for context only.

Dietary patterns, sodium and blood pressure

160. Appel LJ, Moore TJ, Obarzanek E, Vollmer WM, Svetkey LP, Sacks FM, Bray GA, Vogt TM, Cutler JA, Windhauser MM, Lin PH, Karanja N; DASH Collaborative Research Group. A clinical trial of the effects of dietary patterns on blood pressure. N Engl J Med 1997;336(16):1117–1124. PMID 9099655. doi 10.1056/NEJM199704173361601.
161. Sacks FM, Svetkey LP, Vollmer WM, Appel LJ, Bray GA, Harsha D, Obarzanek E, Conlin PR, Miller ER 3rd, Simons-Morton DG, Karanja N, Lin PH; DASH-Sodium Collaborative Research Group. Effects on blood pressure of reduced dietary sodium and the Dietary Approaches to Stop Hypertension (DASH) diet. N Engl J Med 2001;344(1):3–10. PMID 11136953. doi 10.1056/NEJM200101043440101.
162. He FJ, Li J, MacGregor GA. Effect of longer-term modest salt reduction on blood pressure. Cochrane Database Syst Rev 2013;(4):CD004937. PMID 23633321. doi 10.1002/14651858.CD004937.pub2.
163. Aburto NJ, Ziolkovska A, Hooper L, Elliott P, Cappuccio FP, Meerpohl JJ. Effect of lower sodium intake on health: systematic review and meta-analyses. BMJ 2013;346:f1326. PMID 23558163. doi 10.1136/bmj.f1326.
164. Aburto NJ, Hanson S, Gutierrez H, Hooper L, Elliott P, Cappuccio FP. Effect of increased potassium intake on cardiovascular risk factors and disease: systematic review and meta-analyses. BMJ 2013;346:f1378. PMID 23558164. doi 10.1136/bmj.f1378.
165. Neal B, Wu Y, Feng X, Zhang R, Zhang Y, Shi J, Zhang J, Tian M, Huang L, Li Z, Yu Y, Zhao Y, Zhou B, Sun J, Liu Y, Yin X, Hao Z, Yu J, Li KC, Zhang X, Duan P, Wang F, Ma B, Shi W, Di Tanna GL, Stepien S, Shan S, Pearson SA, Li N, Yan LL, Labarthe D, Elliott P. Effect of salt substitution on cardiovascular events and death (SSaSS). N Engl J Med 2021;385(12):1067–1077. PMID 34459569. doi 10.1056/NEJMoa2105675.
166. Johnson C, Mohan S, Rogers K, Shivashankar R, Thout SR, Gupta P, He FJ, MacGregor GA, Webster J, Krishnan A, Maulik PK, Reddy KS, Prabhakaran D, Neal B. Mean dietary salt intake in urban and rural areas in India: a population survey of 1395 persons. J Am Heart Assoc 2017;6(1):e004547. PMID 28062480. doi 10.1161/JAHA.116.004547. Kerala was not sampled.
167. Neter JE, Stam BE, Kok FJ, Grobbee DE, Geleijnse JM. Influence of weight reduction on blood pressure: a meta-analysis of randomized controlled trials. Hypertension 2003;42(5):878–884. PMID 12975389. doi 10.1161/01.HYP.0000094221.86888.AE.
168. Estruch R, Ros E, Salas-Salvadó J, Covas MI, Corella D, Arós F, Gómez-Gracia E, Ruiz-Gutiérrez V, Fiol M, Lapetra J, Lamuela-Raventos RM, Serra-Majem L, Pintó X, Basora J, Muñoz MA, Sorlí JV, Martínez JA, Fitó M, Gea A, Hernán MA, Martínez-González MA; PREDIMED Study Investigators. Primary prevention of cardiovascular disease with a Mediterranean diet supplemented with extra-virgin olive oil or nuts. N Engl J Med 2018;378(25):e34. PMID 29897866. doi 10.1056/NEJMoa1800389. The republished PREDIMED; read with reference 169.
169. Retraction and republication: primary prevention of cardiovascular disease with a Mediterranean diet. N Engl J Med 2013;368:1279–1290. N Engl J Med 2018. PMID 29897867. doi 10.1056/NEJMc1806491.
170. Schulze MB, Manson JE, Ludwig DS, Colditz GA, Stampfer MJ, Willett WC, Hu FB. Sugar-sweetened beverages, weight gain, and incidence of type 2 diabetes in young and middle-aged women. JAMA 2004;292(8):927–934. PMID 15328324. doi 10.1001/jama.292.8.927.
171. Leong J, Kasamatsu C, Ong E, Hoi JT, Loong MN. A study on sensory properties of sodium reduction and replacement in Asian food using difference-from-control test. Food Sci Nutr 2016;4(3):469–478. PMID 27247776. doi 10.1002/fsn3.308. One author is affiliated with a manufacturer of monosodium glutamate.
172. Roerecke M, Kaczorowski J, Tobe SW, Gmel G, Hasan OSM, Rehm J. The effect of a reduction in alcohol consumption on blood pressure: a systematic review and meta-analysis. Lancet Public Health 2017;2(2):e108–e120. PMID 29253389. doi 10.1016/S2468-2667(17)30003-8.
173. Xin X, Guo Y, Wang M, Hu Z, Chen J, Xie J. Optimal exercise modalities and dosages for blood pressure reduction in adults with prehypertension and established hypertension: a network meta-analysis and dose-response relationship study. J Am Heart Assoc 2026;15(2):e044003. PMID 42132182. doi 10.1161/JAHA.125.044003.
174. Mallmann Schneider V, Klarmann Ziegelmann P, Muniz Pereira D, Ferrari R. Effects of different exercise training modalities on 24-hour ambulatory blood pressure in adults with hypertension: a network meta-analysis of randomised controlled trials. Br J Sports Med 2026;60(15):983–990. PMID 42120187.

Cooking methods and food safety

175. Menon M, Dong W, Chen X, Hufton J, Rhodes EJ. Improved rice cooking approach to maximise arsenic removal while preserving nutrient elements. Sci Total Environ 2021;755(Pt 2):143341. doi 10.1016/j.scitotenv.2020.143341.
176. Başaran B, Çuvalcı B, Kaban G. Dietary acrylamide exposure and cancer risk: a systematic approach to human epidemiological studies. Foods 2023;12(2):346. PMID 36673439. doi 10.3390/foods12020346. Sixty-three epidemiological studies; associations inconsistent.
177. Sohouli MH, Fatahi S, Sharifi-Zahabi E, Santos HO, Tripathi N, Lari A, Pourrajab B, Kord-Varkaneh H, Găman MA, Shidfar F. The impact of low advanced glycation end products diet on metabolic risk factors: a systematic review and meta-analysis of randomized controlled trials. Adv Nutr 2021;12(3):766–776. PMID 33253361. doi 10.1093/advances/nmaa150.
178. Baye K, et al. Consumption of diets with low advanced glycation end products improves cardiometabolic parameters: meta-analysis of randomised controlled trials. Sci Rep 2017;7:2266. doi 10.1038/s41598-017-02268-0.
179. Bulbul MRH, et al. Heterocyclic amines in cooked meat products: shortcomings during evaluation, factors influencing formation, risk assessment and mitigation strategies. Meat Sci 2021. doi 10.1016/j.meatsci.2021.108693.
180. Gibis M. Production of heterocyclic aromatic amines in meat: chemistry, health risks and inhibition. A review. LWT — Food Sci Technol 2014. doi 10.1016/j.lwt.2014.06.026.
181. Ng CY, Leong XF, Masbah N, Adam SK, Kamisah Y, Jaarin K. Heated vegetable oils and cardiovascular disease risk factors. Vascul Pharmacol 2014;61(1):1–9. PMID 24632108. doi 10.1016/j.vph.2014.02.004. Much of the supporting evidence is from rat models; no human outcome trial exists.
182. Sivakumar S, Srithayalan S, Arunraj K, Arumukham M, Ganeshalingam S, Kugamoorthy V. The feasible screening of genuine fresh palmyrah toddy and sugar or rice toddy using near-infrared spectroscopy. Heliyon 2024;10(11):e31516. PMID 38826711.

Behaviour change and culturally adapted interventions

183. Kandula NR, Shah NS, Kumar S, Charley M, Clauson M, Lancki N, Finch EA, Ehrlich-Jones L, Rao G, Spring B, Shah NS, Siddique J. Culturally adapted lifestyle intervention for South Asian adults with cardiovascular risk factors: the SAHELI randomized clinical trial. JAMA Cardiol 2024;9(11):973–981. PMID 39259546. doi 10.1001/jamacardio.2024.2526.
184. Lam EL, Shah NS, Kandula NR. Social networks as facilitators and barriers to behavior change among U.S. South Asian adult participants of a culturally adapted, group lifestyle intervention. Patient Educ Couns 2025;130:108440. PMID 39293322.
185. Shetty A, Ross KM. Associations between body mass index, body image satisfaction, and self-weighing during a behavioral weight loss program. Obes Sci Pract 2025;11(3):e70074. PMID 40321456.
186. Brockmann AN, Eastman A, Ross KM. Frequency and consistency of self-weighing to promote weight-loss maintenance. Obesity (Silver Spring) 2020;28(7):1215–1218. PMID 32437055. doi 10.1002/oby.22828.
187. Liampeng S, Wongkliawrian N, Junlawakkananon S, et al. Effect of the weight-loss program using daily self-weighing combined with personalized counseling led by village health volunteers in adults with obesity in a rural community, Thailand: a randomized controlled trial. BMC Prim Care 2023;24:226. PMID 37898753.
188. Wyatt HR, Grunwald GK, Mosca CL, Klem ML, Wing RR, Hill JO. Long-term weight loss and breakfast in subjects in the National Weight Control Registry. Obes Res 2002;10(2):78–82. PMID 11836452. The wider body of National Weight Control Registry findings is not individually sourced in this book.
189. Valshtein TJ, Oettingen G, Gollwitzer PM. Using mental contrasting with implementation intentions to reduce bedtime procrastination: two randomised trials. Psychol Health 2020;35(3):275–301. PMID 31403339.
190. Gollwitzer PM, Bieleke M, Sheeran P. Enhancing consumer behavior with implementation intentions. doi 10.31234/osf.io/u4znb. A preprint chapter.
191. Gadgil MD, Anderson CAM, Kandula NR, Kanaya AM. Dietary patterns are associated with metabolic risk factors in South Asians living in the United States. 2015.
192. Bhupathiraju SN, et al. A healthy plant-based diet is favorably associated with cardiometabolic risk factors among participants of South Asian ancestry. Am J Clin Nutr 2022.

Special populations

193. Bauer J, Biolo G, Cederholm T, Cesari M, Cruz-Jentoft AJ, Morley JE, Phillips S, Sieber C, Stehle P, Teta D, Visvanathan R, Volpi E, Boirie Y. Evidence-based recommendations for optimal dietary protein intake in older people: a position paper from the PROT-AGE Study Group. J Am Med Dir Assoc 2013;14(8):542–559. PMID 23867520. doi 10.1016/j.jamda.2013.05.021.
194. Mantri N, Goel AD, Patel M, Baskaran P, Dutta G, Gupta MK, Yadav V, Mittal M, Shekhar S, Bhardwaj P. National and regional prevalence of gestational diabetes mellitus in India: a systematic review and meta-analysis. BMC Public Health 2024;24:527. PMID 38378536. doi 10.1186/s12889-024-18024-9.
195. Sharma A, Sarwal Y, Devi NK, Saraswathy KN. Polycystic ovary syndrome prevalence and associated sociodemographic risk factors: a study among young adults in Delhi NCR, India. Reprod Health 2025;22:61. PMID 40296029. doi 10.1186/s12978-025-02019-9.
196. Yasmin A, Roychoudhury S, Sengupta P, et al. Prevalence of polycystic ovary syndrome (PCOS) and its associated hormonal and comorbid risk factors in Northeast India: a cross-sectional comparative study. Ther Adv Reprod Health 2025;19:26334941251384195. PMID 41209375.
197. Manna S, Mukherjee R, Kandpal V, Zode M, Kulkarni B, Lyngdoh T. Prevalence of hypothyroidism among pregnant women and associated feto-maternal outcomes in India: systematic review and meta-analysis. Indian J Med Res 2026;163(6):745–762. PMID 42295724. doi 10.25259/ijmr_2554_2025.
198. Sharma P, Verma A. Prevalence of hypothyroidism among postmenopausal women in an urbanised village of northern India: a cross-sectional study. J Family Med Prim Care 2024;13(9):3815–3821. PMID 39464953.
199. Prasad M, Bhardwaj N, Gupta E, Thomas SS. Prevalence and predictors for lean fatty liver disease in general population attending a COVID-19 vaccination center in a tertiary care hospital in India. Euroasian J Hepatogastroenterol 2024;14(2):145–150. PMID 39802862. doi 10.5005/jp-journals-10018-1438.
200. Bhargava B, Rao PN, Kulkarni AV, Vishnubhotla R, Pramod N, Anitha CT, Mahadev K. Prevalence of metabolic dysfunction-associated fatty liver disease among information technology employees in India. Sci Rep 2025;15:10124. PMID 40128210. doi 10.1038/s41598-025-91482-2.
201. Desai GS, Hajare S, Ghorpade S, Hajare S. Prevalence of controlled attenuation parameter (CAP)-assessed hepatic steatosis as a possible indicator of MAFLD risk in healthy medical students: a cohort study from South India. Cureus 2025;17(10):e92747. PMID 41122622.
202. Biswas K, Kushwaha V, Singh JK, Mir AA. Burden of vitamin D and vitamin B12 deficiency among older patients in North India: a single-centre study. Maedica 2024;19(3):580–586. PMID 39553356.
203. Priyadarshi K, Ansari Z, Pathak S, et al. Thyroid function parameters, thyroid status, and vitamin B12 deficiency in hospitalized adults: a retrospective cross-sectional study in eastern India. Cureus 2026;18(1):e109415. PMID 42333337.
204. Kashyap S, Singh A, Agarwal M, M A A, Singh P. Coexistence of anaemia and common morbidities among children in India below the age of five years: evidence from the National Family Health Survey-5 (2019–21). Cureus 2026;18:e109057. PMID 42317896.
205. Preethi V, Hemalatha V, Arlappa N, Thomas MB, Jaleel A. Trends and predictors of severe and moderate anaemia among children aged 6–59 months in India: an analysis of three rounds of National Family Health Survey (NFHS) data. BMC Public Health 2024;24:2824. PMID 39402527.

Section 2 — Food composition data sources

Every nutrition panel in this book is calculated, not laboratory-assayed, from the tables below. Values are rounded and will vary with produce, variety, brand and portion. The two principal tables are not interchangeable: the Indian tables report available carbohydrate determined analytically and energy in kilojoules, while the United States tables report carbohydrate by difference. No table in this book mixes the two bases, and each table names its source.

1. Longvah T, Ananthan R, Bhaskarachary K, Venkaiah K. Indian Food Composition Tables. Hyderabad: National Institute of Nutrition, Indian Council of Medical Research; 2017. Full text: https://www.nin.res.in/ebooks/IFCT2017.pdf — the primary source for all Indian ingredients in this book. Values are per 100 g edible portion, with mean ± standard deviation and the number of sampling regions. Known gaps relevant to this book: no entry for red or matta rice, no coconut milk, no curd or buttermilk, no thakara or tapioca leaves; several fish are single samples; and there is an internal species-name inconsistency for the entry coded A017 ("Varagu").
2. Indian Food Composition Tables 2017, open dataset and web front end: https://ifct2017.github.io and https://github.com/ifct2017/ifct2017 — used for lookup convenience; all values in this book were checked against the published tables in reference 1.
3. US Department of Agriculture, Agricultural Research Service. FoodData Central, SR Legacy dataset. https://fdc.nal.usda.gov — used for generic whole foods absent from the Indian tables, and for fatty-acid detail (individual saturated fatty acids, eicosapentaenoic acid, docosahexaenoic acid) that the Indian tables report only as relative percentages for oils. Every value used is traceable by its FoodData Central identification number.
4. University of Sydney. Glycemic Index Research Service, searchable glycaemic index database. https://glycemicindex.com — the correct place to look up named varieties. Used in this book only where a specific database entry could be identified.
5. Atkinson FS, Brand-Miller JC, Foster-Powell K, Buyken AE, Goletzke J. International tables of glycemic index and glycemic load values 2021: a systematic review. Am J Clin Nutr 2021;114(5):1625–1632. PMID 34258626 — the published category-level compilation (see Section 1, reference 58). The earlier 2008 edition, which carries individually named entries, is Section 1, reference 59.
6. Pavithran N, et al. South Indian cuisine with low glycemic index ingredients reduces cardiovascular risk factors in subjects with type 2 diabetes. Int J Environ Res Public Health 2020;17(17):6232. doi 10.3390/ijerph17176232 (see Section 1, reference 72) — the source of the only measured glycaemic index values for Kerala preparations used in this book. These are flagged as Kerala-specific wherever they appear.

Section 3 — Guidelines, reports and institutional sources

World Health Organization

1. World Health Organization. Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline. Geneva: WHO; 2023. ISBN 9789240073630. https://www.who.int/publications/i/item/9789240073630
2. World Health Organization. Carbohydrate intake for adults and children: WHO guideline. Geneva: WHO; 2023. https://www.who.int/publications/i/item/9789240073593
3. World Health Organization. Total fat intake for the prevention of unhealthy weight gain in adults and children: WHO guideline. Geneva: WHO; 2023. https://www.who.int/publications/i/item/9789240073654
4. World Health Organization. WHO updates guidelines on fats and carbohydrates [news release]. 17 July 2023. https://www.who.int/news/item/17-07-2023-who-updates-guidelines-on-fats-and-carbohydrates
5. World Health Organization. Sodium reduction [fact sheet]. Source of the limits of less than 2,000 mg sodium and less than 5 g salt per adult per day, and of the global mean intake figure for 2021.
6. World Health Organization. WHO global report on sodium intake reduction. Geneva: WHO; 2023. ISBN 9789240069985.
7. World Health Organization. Guideline: Sodium intake for adults and children. Geneva: WHO; 2012.
8. World Health Organization. Guideline: Potassium intake for adults and children. Geneva: WHO; 2012. NCBI Bookshelf NBK132453. Source of the conditional recommendation of at least 90 mmol (3,510 mg) potassium per day for adults.
9. World Health Organization. Alcohol [fact sheet], updated 28 June 2024. Source of the statement that no form of alcohol consumption is risk-free.

Indian national bodies

10. National Institute of Nutrition, Indian Council of Medical Research. Dietary Guidelines for Indians — A Manual. 2nd edn. Hyderabad: NIN; 2011. https://www.nin.res.in/downloads/DietaryGuidelinesforNINwebsite.pdf — source of the visible-fat ceiling and of the 2011 wording on ghee, butter, vanaspati and coconut oil. That wording does not appear in the 2024 edition and must not be attributed to it.
11. Indian Council of Medical Research – National Institute of Nutrition. Dietary Guidelines for Indians. Hyderabad: ICMR-NIN; 2024. Booklet: https://www.nin.res.in/downloads/DGI_Booklet_English_CMYK.pdf; portal: https://www.nin.res.in/dietaryguidelines2024.html
12. NITI Aayog, Government of India. Macro and Fiscal Landscape of the State of Kerala. March 2025. Source of Kerala life expectancy, infant mortality, literacy and dependency-ratio figures.
13. Ministry of Health and Family Welfare, Government of India. National Family Health Survey (NFHS-6), 2023–24.
14. International Institute for Population Sciences / Ministry of Health and Family Welfare. National Family Health Survey (NFHS-5), 2019–21, Kerala factsheet.
15. Census of India 2011; and Sample Registration System, Office of the Registrar General of India.
16. ICMR-INDIAB Kerala state report, as hosted by the Indian Institute of Diabetes, Kerala (iidkerala.org/assets/image/pdf/ICMR.pdf), reporting the Kerala phase of the study described in Section 1, reference 3. State-report grade; every Kerala figure taken from it must be confirmed against the published supplementary tables.
17. Food Safety and Standards Authority of India (FSSAI). No specific FSSAI document was verified during the research for this book. FSSAI labelling data are named in the text as the source to consult for Kerala-specific sodium values. Searched again for the food-safety revision and not found: FSSAI publishes no consumer guidance located during this research on cooling and reheating cooked rice, on minimum salt or acidity in pickles, on raw sprouts, or on home fermentation of idli and dosa batters. Where the book needed those figures it has cited the authorities that do publish them — see references 32 to 56 below.

Other national and regional bodies

18. US Food and Drug Administration / US Environmental Protection Agency. Advice about Eating Fish. Updated 5 March 2024. https://www.fda.gov/food/consumers/advice-about-eating-fish — source of the Best Choices, Good Choices and Choices to Avoid tiers. Mussels are not addressed on the page consulted, and most Kerala species are not named on it.
19. EFSA Panel on Contaminants in the Food Chain (CONTAM). Update of the risk assessment of inorganic arsenic in food. EFSA Journal 2024;22(1):e8488. doi 10.2903/j.efsa.2024.8488.
20. EFSA Panel on Contaminants in the Food Chain (CONTAM). Scientific opinion on acrylamide in food. EFSA Journal 2015;13(6):4104. doi 10.2903/j.efsa.2015.4104.
21. Bundesinstitut für Risikobewertung (German Federal Institute for Risk Assessment). Cassia cinnamon with high coumarin contents to be consumed in moderation. BfR opinion and press release. Source of the coumarin tolerable daily intake of 0.1 mg per kg body weight per day, and of the statement that roughly 2 g of cassia cinnamon per day reaches it for a 60 kg adult.
22. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Turmeric. Bethesda: National Institute of Diabetes and Digestive and Kidney Diseases. NCBI Bookshelf NBK548561. Source of the likelihood score of A for clinically apparent liver injury, and of the statement that standard turmeric powder has a long history of safety.
23. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Garcinia cambogia. Bethesda: NIDDK. NCBI Bookshelf NBK548087. Source of the likelihood score of B, and of the explicit statement that culinary use of the dried fruit rind is not linked to the reported cases of liver injury.
24. Drugs and Lactation Database (LactMed). Fenugreek. Bethesda: National Institute of Child Health and Human Development. NCBI Bookshelf NBK501779.
25. American Heart Association. Recommendation of an ideal limit of 1,500 mg sodium per day for most adults, with 2,300 mg as an upper limit.
26. American Diabetes Association. What is the Diabetes Plate? https://diabetesfoodhub.org/blog/what-diabetes-plate — the plate model this book adapts as the Kerala Plate.
27. American Diabetes Association. Plan Your Plate patient handout, 2023. https://professional.diabetes.org/sites/dpro/files/2023-12/pe23_plan_your_plate_v_0.pdf
28. Centers for Disease Control and Prevention. Diabetes Meal Planning. https://www.cdc.gov/diabetes/healthy-eating/diabetes-meal-planning.html
29. HEART UK. The Portfolio Diet (dietary patterns resource), summarising the component doses and LDL-cholesterol reductions of the protocols described in Section 1, reference 87.
30. National Institute for Health and Care Excellence (NICE). Overweight and obesity management, NG246, replacing CG189. Not retrievable during the research for this book; no NICE recommendation, threshold or wording is printed anywhere in this book.
31. Codex Alimentarius Commission. Standard for Edible Cassava Flour, CXS 176-1989. Adopted 1989; revised 1995; amended 2013. https://www.fao.org/input/download/standards/59/CXS_176e.pdf — source of the statement that for flour made from bitter cassava, "detoxification is carried out by soaking the tubers in water for a few days, before they undergo drying". Correction to earlier drafts of this book: this standard does not itself set a hydrocyanic acid maximum, and the 10 mg/kg figure must not be attributed to Codex. The 10 mg/kg limit is FSANZ's — see reference 46 below — and the text has been changed accordingly.

Food-safety authorities

These sixteen entries close the eight food-safety gaps identified during the pre-publication review. The full working, including the exact quotations used and the figures no authority states, is in this book's research file 06.

Cooked rice, cooling and reheating

32. Food Standards Agency. Home food fact checker. London: FSA; last updated 17 July 2025. https://www.food.gov.uk/safety-hygiene/home-food-fact-checker — source of every domestic limit this book prints for cooked rice: chill "as quickly as possible, ideally within one hour"; "keep rice in the fridge for no more than one day until reheating"; "you should never reheat rice more than once"; reheat until "it is steaming hot all the way through". The NHS page formerly at nhs.uk on reheating rice now redirects here.
33. US Food and Drug Administration. Food Code 2022. College Park, MD: FDA; 18 January 2023. https://www.fda.gov/food/fda-food-code/food-code-2022 — § 3-501.14 (cooling: two hours from 57ºC/135ºF to 21ºC/70ºF, six hours in total to 5ºC/41ºF or less), § 3-501.15 (cooling methods), § 3-403.11 (reheating for hot holding to 74ºC/165ºF for 15 seconds), § 3-501.17 (seven-day date marking, a commercial rule and not a domestic one), and Chapter 1 Tables A and B (the pH and water-activity matrix for time/temperature control for safety foods). This book follows the stricter FSA cooling figure for home kitchens and cites the Food Code for the reheating temperature.
34. US Food and Drug Administration. Bad Bug Book: Foodborne Pathogenic Microorganisms and Natural Toxins Handbook. 2nd edn. Silver Spring, MD: FDA; 2012. Chapter: Bacillus cereus and other Bacillus species. https://www.fda.gov/files/food/published/Bad-Bug-Book-2nd-Edition-(PDF).pdf — source of the statement that cereulide "is stable after heating at 121°C for 30 minutes, cooling at 4°C for 60 days, and at a pH range of 2 to 11".

Pickles and preserves

35. United States Department of Agriculture / National Institute of Food and Agriculture. Complete Guide to Home Canning, Guide 6: Preparing and Canning Fermented Foods and Pickled Vegetables. Agriculture Information Bulletin 539. Revised 2015. https://nchfp.uga.edu/papers/guide/GUIDE06_HomeCan_rev0715.pdf — source of "Caution: Use of reduced-sodium salt in fermented pickle recipes is not recommended"; of the discard rule "if the pickles become soft, slimy, or develop a disagreeable odor, discard them"; and of the reduced-sodium pickle recipes, all of which are vinegar-acidified and heat-processed.
36. National Center for Home Food Preservation, University of Georgia. General Information on Pickling, reviewed February 2018, and General Information on Fermenting (adapted from reference 35). https://nchfp.uga.edu/how/pickle/general-information-pickling/general-information-on-pickling/ — source of "do not attempt to make sauerkraut or fermented pickles by cutting back on the salt required" and "do not alter vinegar, food, or water proportions in a recipe or use a vinegar with unknown acidity".
37. D'Sa EM. Preservation Principles in Chutney. Athens, GA: National Center for Home Food Preservation, University of Georgia; November 2005. https://nchfp.uga.edu/resources/entry/preservation-principles-in-chutney — the source of the pH 4.6 threshold as this book applies it: "if the product is not acidified sufficiently (below pH 4.6), and not heat-processed adequately, pathogenic bacterial spores may survive". The only NCHFP document that applies the threshold to a spiced oil-and-acid preserve rather than to a cucumber.
38. National Center for Home Food Preservation, University of Georgia. Ensuring Safe Canned Foods (adapted from reference 35). https://nchfp.uga.edu/how/can/general-information/ensuring-safe-canned-foods/ — source of the classification: "low-acid foods have pH values higher than 4.6" and "acid foods have a pH of 4.6 or lower", with the growth conditions for Clostridium botulinum.
39. US Department of Agriculture, Food Safety and Inspection Service. Molds on Food: Are They Dangerous? Washington DC: FSIS; last updated 22 August 2013. https://www.fsis.usda.gov/food-safety/safe-food-handling-and-preparation/food-safety-basics/molds-food-are-they-dangerous — the authority for discarding rather than scraping a mouldy soft preserve: "microbiologists recommend against scooping out the mold and using the remaining condiment", because "'root' threads have invaded it deeply".
40. Health Canada. Food safety tips for vegetables and herbs in oil. Ottawa: Health Canada; date modified 8 February 2013. https://www.canada.ca/en/health-canada/services/food-safety-fruits-vegetables/food-safety-tips-vegetables-herbs-oil.html — the authority for the garlic-in-oil caution and for the one-week refrigerated limit: "always keep vegetables and herbs stored in oil in the refrigerator"; "use your oil within one week of making it. Throw out any oil that is left over."

Declared unavailable, and said so in the text at R096 and R097: no authority located publishes a minimum salt concentration for an ambient-stored achar, or a refrigerated shelf life for a reduced-salt oil-and-acid pickle. The controlling variables in the published guidance are pH and water activity, neither of which a home cook can measure.

Sprouts

41. US Food and Drug Administration. Selecting and Serving Produce Safely. Silver Spring, MD: FDA; last updated 5 March 2024. https://www.fda.gov/food/buy-store-serve-safe-food/selecting-and-serving-produce-safely — "vulnerable populations should avoid eating raw or lightly cooked sprouts of any kind (including onion, alfalfa, clover, radish, and mung bean sprouts)".
42. US Food and Drug Administration. Fruits, Veggies and Juices (Food Safety for Moms-to-Be). Silver Spring, MD: FDA; last updated 5 March 2024. https://www.fda.gov/food/people-risk-foodborne-illness/fruits-veggies-and-juices-food-safety-moms-be — the pregnancy advisory: "avoid eating raw sprouts of any kind"; "cook sprouts thoroughly".
43. Health Canada. Information Update: Health Canada reminds Canadians about the risks in eating sprouts. Ottawa: Health Canada; 24 January 2007. https://www.canada.ca/en/news/archive/2007/01/information-update-health-canada-reminds-canadians-about-risks-eating-sprouts.html — "children, the elderly and those with weakened immune systems … should not eat any raw sprouts at all". No authority located publishes a home-sprouting temperature, rinse frequency or refrigerated shelf life; the method in R062 is this book's own and is labelled as such.

Cassava

44. Food Standards Australia New Zealand. Cyanogenic Glycosides in Cassava and Bamboo Shoots: A Human Health Risk Assessment. Technical Report Series 28. Canberra: FSANZ; July 2004. https://www.foodstandards.gov.au/sites/default/files/publications/Documents/28_Cyanogenic_glycosides.pdf — source of the preparation requirement, the acute symptom list, the 50–60 mg lethal dose, konzo, and the statement that "goitre and cretinism … can be considerably aggravated by a continuous dietary cyanide exposure".
45. EFSA Panel on Contaminants in the Food Chain (CONTAM). Evaluation of the health risks related to the presence of cyanogenic glycosides in foods other than raw apricot kernels. EFSA Journal 2019;17(4):5662. doi 10.2903/j.efsa.2019.5662 — source of the acute reference dose of 20 µg cyanide per kg body weight, and of the statement that the data "do not allow the derivation of a chronic health-based guidance value (HBGV) for cyanide".
46. Food Standards Australia New Zealand. Imported food risk statement: Ready-to-eat cassava chips and hydrocyanic acid. Canberra: FSANZ; March 2016. https://www.foodstandards.gov.au/sites/default/files/2023-11/Cassava%20chips%20and%20HCN.pdf — the correct source of the 10 mg/kg maximum level for total hydrocyanic acid, under Schedule 19 of the Australia New Zealand Food Standards Code. Not a Codex figure; see the correction at reference 31.

Dried and salted fish

47. US Food and Drug Administration. Fish and Fishery Products Hazards and Controls Guidance. 4th edn, June 2022 revision. Silver Spring, MD: FDA. https://www.fda.gov/media/80637/download — Chapter 13 (Clostridium botulinum Toxin Formation), source of the shelf-stability barriers "20% water phase salt (wps) or more" and "water activity to 0.85 or below by drying"; and Chapter 7 (Scombrotoxin/Histamine Formation), source of "once histamine is produced, it cannot be eliminated by heat (including retorting) or freezing", of the statement that histamine can form during drying and salting, and of the 50 ppm guidance level.
48. US Food and Drug Administration. CPG Sec 540.650 — Uneviscerated Fish Products that are Salt-cured, Dried, or Smoked (Revised). November 2005. https://www.fda.gov/regulatory-information/search-fda-guidance-documents/cpg-sec-540650-uneviscerated-fish-products-are-salt-cured-dried-or-smoked-revised — the botulism history associated with uneviscerated salt-cured fish, and the treatment of small species of three to five inches.

Vitamin A

49. EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA). Scientific opinion on the tolerable upper intake level for preformed vitamin A and β-carotene. EFSA Journal 2024;22(6):e8814. PMID 38846679. doi 10.2903/j.efsa.2024.8814 — the tolerable upper intake level of 3,000 µg retinol equivalents a day for adults, with teratogenicity as the critical effect.
50. National Institutes of Health, Office of Dietary Supplements. Vitamin A and Carotenoids — Health Professional Fact Sheet. Bethesda, MD: NIH ODS; updated 10 March 2025. https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/ — reporting the Food and Nutrition Board (Institute of Medicine / National Academies) upper level of 3,000 mcg RAE a day for adults, and the pregnancy advisory.
51. National Health Service. Vitamins and minerals — Vitamin A. NHS; page last reviewed 3 August 2020. https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-a/ — source of "do not eat liver or liver products, such as pâté, more than once a week"; of "if you're pregnant you should avoid eating liver or liver products"; and of the 1.5 mg a day precautionary figure for post-menopausal women and older men. The 1.5 mg advisory and the 3,000 µg upper level answer different questions and this book prints both.

Fermented batters

52. BC Centre for Disease Control, Environmental Health Services. Safety of Fermented Foods: Assessing risks in fermented food processing practices and advice on how to mitigate them. Section 3.4: Dosa and Idli. Vancouver: BCCDC; December 2024 (updated from June 2023). https://www.bccdc.ca/resource-gallery/Documents/Educational%20Materials/EH/FPS/Food/Fermented/Fermented%20Foods%20Guideline%20-%203.4%20Dosa%20and%20Idli.pdf — the only public-health document located that addresses idli and dosa batter by name. Source of the four-hour room-temperature soaking cap, the 12–14 hour fermentation window at about 30°C, the pH range of 4.3–4.6 after twelve hours, and the shelf life of about one day at room temperature and five to seven days refrigerated. A provincial public-health guideline, cited as such: no national authority in the UK, the US or India publishes guidance on this food.
53. Kansas State University Research and Extension / University of Missouri Extension, for USDA-NIFA. Safely Fermenting Food at Home. September 2015. https://www.nifa.usda.gov/sites/default/files/resource/Safely%20Fermenting%20Food%20at%20Home%20508.pdf — general home-fermentation practice, including the instruction that "after fermenting, products must either be stored in the refrigerator or canned properly".

Anthropometry

54. World Health Organization. WHO STEPS Surveillance Manual, Part 3, Section 5: Collecting Step 2 data — Physical Measurements. Geneva: WHO; last updated 26 January 2017. https://cdn.who.int/media/docs/default-source/ncds/ncd-surveillance/steps/part3-section5.pdf — the landmark this book uses: "at the midpoint between the lower margin of the last palpable rib and the top of the iliac crest (hip bone)", measured at the end of a normal expiration, tape horizontal and parallel with the floor, snug without compressing the skin, read to 0.1 cm.
55. World Health Organization. Waist circumference and waist–hip ratio: report of a WHO expert consultation, Geneva, 8–11 December 2008. Geneva: WHO; 2011. ISBN 9789241501491. 39 pp. https://www.who.int/publications/i/item/9789241501491
56. National Center for Health Statistics. National Health and Nutrition Examination Survey (NHANES) Anthropometry Procedures Manual, 2021. Hyattsville, MD: NCHS; May 2021. https://wwwn.cdc.gov/nchs/data/nhanes/public/2021/manuals/2021-Anthropometry-Procedures-Manual-508.pdf — the contrasting US protocol, which measures "just above the uppermost lateral border of the right ilium" at the midaxillary line rather than at the WHO midpoint. Neither protocol uses the umbilicus.

Secondary institutional summaries, cited as such

These were used to obtain figures tabulated from papers whose full text was not accessible. They are secondary and are flagged as such wherever a figure derives from them.

57. Therapeutics Initiative, University of British Columbia. Can blood pressure be lowered by a change in diet? Evidence from the DASH trials. Therapeutics Letter 50, 2003. Source of the tabulated DASH and DASH-Sodium blood-pressure figures.
58. American College of Cardiology. Journal scan: Primary prevention of CVD with a Mediterranean diet. 2018. Source of the tabulated PREDIMED event counts and hazard ratios.
59. American College of Cardiology. Journal scan: Low-fat vs. low-carb diet and weight loss in overweight adults. 2018. Source of the tabulated DIETFITS weight-change figures and interaction probabilities.
60. American College of Cardiology. AHA Presidential Advisory on Dietary Fats and CVD, 26 June 2017. The frequently quoted sentence about coconut oil is verified only through this summary; it must be checked against the advisory itself before being quoted verbatim.
61. Harvard T.H. Chan School of Public Health, The Nutrition Source. PREDIMED study retraction and republication, 22 June 2018.
62. University of Glasgow. News release on the two-year DiRECT publication. Source of independently reported two-year figures.

Compliance and labelling guidance

63. Federal Trade Commission. Health Products Compliance Guidance. December 2022. https://www.ftc.gov/system/files/ftc_gov/pdf/Health-Products-Compliance-Guidance.pdf — the standard this book's claim language is written against.
64. US Copyright Office. Circular 33: Works Not Protected by Copyright. https://www.copyright.gov/circs/circ33.pdf; and Copyright Alliance, Are recipes and cookbooks protected by copyright? — the basis for how traditional recipes are attributed in this book.

Section 4 — Kerala food history, culinary anthropology and primary sources

Ancient and early sources

1. The Periplus of the Erythraean Sea. Anonymous, Greek, first century CE. The source of the description of Muziris as a port abounding in ships from Arabia and from the Greeks, of the distance from Tyndis, and of pepper as produced in only one region.
2. Pliny the Elder. Naturalis Historia (Natural History), c. 77 CE. Book VI, chapter 26, as presented in the Perseus Digital Library: https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.02.0137%3Abook%3D6%3Achapter%3D26 — the source of primum emporium Indiae and of the complaint about the drain of sesterces to India.
3. The Muziris papyrus: P. Vindob. G 40822, Austrian National Library, Vienna. Greek papyrus, roughly 38 × 27 cm, dated palaeographically to the middle of the second century CE; a maritime loan settlement negotiated at Alexandria on a cargo carried from Muziris by the ship Hermapollon.
4. Varahamihira. Brihat Samhita, early sixth century CE — the description of steam-cooking (svinna bhakshya).
5. Ibn Battuta, Rihla, on Calicut, 1342.
6. Ravenstein EG (trans.). A Journal of the First Voyage of Vasco da Gama, 1497–1499 (the Roteiro) — the source of the inventory of da Gama's gifts to the Zamorin.
7. Sahasrayogam; Cikitsamanjari; and Vagbhata's Ashtangahridaya — the Kerala Ayurvedic compendia in which food preparations appear as therapeutics, and which stand in this book as the documentary layer beneath the printed Malayalam cookbook.

Documents of the colonial and modern state

8. Nagam Aiya V. The Travancore State Manual. Travancore Government Press, 1906 — the source of the description of tapioca as "the poor man's food par excellence."
9. The Cochin State Manual.
10. Government of Travancore: prohibition of tapioca export except by permit of the Excise Commissioner, 25 October 1942; the Tapioca Control Order of 2 November 1943, regulating purchase, sale, storage and transport; and the legislative debate of 1944 on the effect of the controls on cultivators.
11. Famine Inquiry Commission, 1945 — the recommendation that tapioca's low protein content required supplementation, explicitly with fish. This is the documentary origin of kappa with fish curry as a nutritional prescription rather than only a preference.
12. Cardamom Hill Reserve, established by royal proclamation of Travancore, April 1822.

Archaeology and scholarly literature

13. De Romanis F. The Indo-Roman Pepper Trade and the Muziris Papyrus. Oxford Studies on the Roman Economy. Oxford University Press, 2020. The scholarly foundation for the Hermapollon cargo reconstruction, the tonnages and the Roman tetarte of 25 per cent.
14. Review of De Romanis, The Indo-Roman Pepper Trade and the Muziris Papyrus. Bryn Mawr Classical Review 2020.11.32. https://bmcr.brynmawr.edu/2020/2020.11.32/
15. "The Muziris Papyrus and the Eastern Maritime Trade." The English and Foreign Languages Journal of Cultural Studies (TEAJCS), 2022, issue 1. https://teajcs.com/wp-content/uploads/2022/11/004_TEAJCS-2022-Individual-art-Muziris-Papyrus-Issue-1.pdf.
16. Kerala Council for Historical Research. Excavations at Pattanam, near North Paravur, Ernakulam district, seven seasons 2007–2014 — Roman pottery, glass and coins spanning c. 100 BCE to 400 CE; a fired-brick wharf with nine teak bollards; a six-metre canoe of Artocarpus hirsutus; Tamil-Brahmi inscriptions of c. second century CE. The identification of Pattanam as Muziris is an inference from material culture, not from a named inscription.
17. Tharuvana A. "Malabar Cuisine: History, Culture and the Present." Sahapedia. http://www.sahapedia.org/malabar-cuisine-history-culture-and-the-present — the single best short scholarly essay on Malabar foodways: the tharavaad kitchen, the ara, matriliny and culinary transmission.
18. "In Conversation with Ummi Abdulla: Malabar Food." Sahapedia. http://www.sahapedia.org/malabar-food-conversation-ummi-abdullah
19. Ramachandran A. "Culinary Connections Between South India and Southeast Asia." Peppertrail. https://peppertrail.com/culinary-connections-between-south-india-and-southeast-asia/ — the argument, relied on in this book, that appam, idiyappam and puttu are pre-colonial South Indian rather than European introductions.
20. "Revisiting Kerala's Gulf Connection: Half a Century of Emigration, Remittances and Their Macroeconomic Impact, 1972–2020." PMCID PMC7571534. Used only for the Kerala Migration Survey series citation; no figure is taken from it.
21. "Major Land Reform Legislations in Kerala." International Journal of Creative Research Thoughts (IJCRT), paper IJCRT2112442. https://ijcrt.org/papers/IJCRT2112442.pdf.
22. "Malabar Culinary Culture: Cultural appreciation of Arab flavor." International Journal of Creative Research Thoughts (IJCRT), paper IJCRT2103075. https://ijcrt.org/papers/IJCRT2103075.pdf.
23. "Insights from the Kerala Paradox for the Indian Diaspora." International Journal of Science and Healthcare Research (IJSHR) 2024;9(4). https://ijshr.com/IJSHR_Vol.9_Issue.4_Oct2024/IJSHR14.pdf.
24. National Centre for Biological Sciences, History of Science Society. Ashtavaidya Tradition. https://www.ncbs.res.in/HistoryScienceSociety/ashtavaidya-tradition — the source for the eight physician families of Kerala and their gurukula training.

Agro-ecology, geography and geographical indications

25. Food and Agriculture Organization of the United Nations. Kuttanad Below Sea Level Farming System, Globally Important Agricultural Heritage System, designated 2013. https://www.fao.org/giahs/giahs-around-the-world/india-kuttanad-farming-system/en
26. Department of Soil Survey and Soil Conservation, Government of Kerala. Kerala State Profile, https://www.keralasoilfertility.net/en/kerala_profile.jsp; and Laterites, https://www.keralasoilfertility.net/en/laterites.jsp
27. Kerala Forest Department. Physiography. https://forest.kerala.gov.in/en/physiography/
28. Kerala Bureau of Industrial Promotion (K-BIP). Geographical Indication tagged products of Kerala. https://www.gikerala.in/
29. Embassy of India. Registered Geographical Indications, India — Agricultural and Food (PDF). https://www.indianembassyusa.gov.in/pdf/GI.pdf
30. Kerala Tourism (Department of Tourism, Government of Kerala) — informational pages used for cultural description rather than for any quantitative claim: on tapioca's introduction, on the Kuttanad below-sea-level farming system, on sadya, on the Fort Kochi fishing nets, and on tribal koottu kari. https://www.keralatourism.org
31. "Kerala's GI hunters provide stardom to unique crops." Vikalp Sangam. https://vikalpsangam.org/article/keralas-gi-hunters-provide-stardom-to-unique-crops/

Community, dish and technique writing consulted

Used for cultural and culinary description, and for tracing the competing origin stories that the text presents as contested rather than settled. None of these carries a nutritional or clinical claim in this book.

32. Namboothiri Websites. "Food and Food Habits." https://www.namboothiri.com/articles/food.htm
33. George L. "The beginnings of the Syrian Christian kitchen in Kerala" (extract from The Suriani Kitchen). Penguin India Blog, 6 July 2017. https://penguinindiablog.wordpress.com/2017/07/06/the-beginnings-of-the-syrian-christian-kitchen-in-kerala/
34. "Lifestyle of Kerala Syrian Christians." Nasrani.net, 15 April 2008. https://www.nasrani.net/2008/04/15/lifestyle-of-kerala-syrian-christians/
35. "The Cochini Jewish Cuisine." Café Dissensus, 31 December 2014. https://cafedissensus.com/2014/12/31/the-cochini-jewish-cuisine/; "Jews from Cochin bring their unique Indian cuisine to Israeli diners," Tablet, https://www.tabletmag.com/sections/food/articles/cochin-indian-cuisine; "India's Jew Town only has a handful of Jews left," Jewish Telegraphic Agency, 15 December 2020.
36. "Chillies Arrive in the Land of Pepper." Hindavi / Kitchens of Indian History, 30 August 2015. https://kitchensofhistory.wordpress.com/2015/08/30/chillies-arrive-in-the-land-of-pepper/
37. "The story of Aviyal." Maddy's Ramblings, September 2017. https://maddy06.blogspot.com/2017/09/the-story-of-aviyal.html — the fullest treatment of the competing legends.
38. "Sambar did not originate in South India. It was first cooked in a royal Maratha kitchen." The Print, https://theprint.in/feature/sambar-did-not-originate-in-south-india-it-was-first-cooked-in-a-royal-maratha-kitchen/2193650/; and "How Thanjavur Maratha cuisine found favour in the south," The News Minute.
39. "The Caste Stories Behind Kerala's Traditional Cookware." Goya, https://www.goya.in/blog/the-caste-stories-behind-keralas-traditional-cookware; "The cooking utensils of Kerala — Earth, Stone, Metal" and "Uruli, the Traditional Vessel," NatureLoC Healthy Living; and Mannar Craft on bell-metal uruli casting.
40. Tapioca in Kerala: "It's Kappa Day! All about how tapioca evolved from famine food to everyday staple," The South First; "A Down-To-Earth Delicacy," Whetstone Magazine; "Kappa, the Story of Kerala's Favourite Tuber," Goya; "How Kerala Adopted Kappa," Storytrails; "How WWII Brought Tapioca To The Forefront In Kerala," Slurrp. Sources of the quoted remarks by Regi Mathew, Rakesh Raghunathan, Prima Kurien and Dharini Krishnan.
41. Toddy-shop culture: "Toddy and Touchings: The Delicious Story of Kerala's Kallu Shaap Cuisine," Living Foodz; "Kallu Shappu: Alleppey's Authentic Toddy Shop Culture," Channel iam; "Kerala Toddy Shops (Kallu Shaap)," Kerala Nature Vibes; "Toddy-Kallu: Kerala's Intoxicating Cultural Heritage," The Culture Gully.
42. Vasco da Gama's landfall: "A Snapshot of History: Vasco da Gama in Calicut, 1498," Ala; and "Vasco Da Gama — Voyage to Calicut, 1498," Historic Alleys. On the Muziris papyrus: "Introducing the Muziris Papyrus," Historic Alleys; and Mouziris, Navigating the Periplus, https://navigating-the-periplus.github.io/locations/mouziris.html
43. Kerala and China: "Why Kochi is reviving historical links to China," South China Morning Post; "The Rise and Fall of the Zamorins of Calicut," Live History India.
44. Souring agents: "Kudampuli — What It Is, How to Use It and Why It Makes Kerala Fish Curry Different," Paithrka; "Malabar Tamarind, Kodampuli or Goraka," The Cooking Naturopath.
45. Sadya and the festival calendar: "Kerala Sadya — Onasadya & Banana Leaf Feast," KeralaFolklore; "Serve right, sit well as you feast on Onam," Onmanorama; "Karkidakam Special Foods," Foodiesonly; "Karkidaka Marunnu Kanji or Oushada Kanji," My Diverse Kitchen.
46. Parotta and the tea-shop economy: "Multi-Layered Parotta and Beef Fry, Kerala's Best On Your Plate," Slurrp; and "Gulf Dreams to Global Pathways: How Kerala's Migration Economy Transitioned," The Wire.
47. Encyclopaedic and reference-website entries consulted for orientation and cross-checking, and not relied on for any published claim in this book: Wikipedia articles on Muziris, Pokkali, Matta rice, Cardamom Hills, Marayoor, Kappad, Chinese fishing nets, Saint Thomas Christians, Thalassery cuisine, Thalassery biriyani, Latin Catholics of Kerala, Paradesi Synagogue, Anglo-Indian cuisine, Gowda Saraswat Brahmin, Ashtavaidya, Vaidyaratnam P. S. Varier, Appam, Idiyappam, Puttu, Neyyappam, Mezhukkupuratti, Avial, Pidiyum kozhiyum, Pearl spot, Chengalikodan Nendran Banana, Coconut, Cashew, Vishu, Thiruvathira, Karkidaka vavu, Nombu kanji, Aranmula, Edayur chilli, South Indian parotta, Parotta, Annamma Mathew, K. T. Achaya, Land reform in Kerala, Demographics of Kerala, and the category of geographical indications in Kerala.

Section 5 — Cookbooks and food writing consulted

Only titles that could be confirmed during research appear here. Where an author's bibliography is reported inconsistently, or where a title was named without publication details, that is marked rather than filled in.

The Kerala shelf

1. Kannampilly V. The Essential Kerala Cookbook. Penguin India. ISBN 9780143029502. The standard English-language reference: comprehensive, community-aware, unfussy.
2. Ramachandran A. Grains, Greens and Grated Coconuts: Recipes and Remembrances of a Vegetarian Legacy. 2007. The best-researched book on Palakkad Brahmin vegetarian cooking, and the strongest food-historical writing by any Kerala author.
3. Abdulla U. Malabar Muslim Cookery. Orient Longman, 1981. The canonical Mappila text; 143 recipes, with step-by-step illustrations by Anant Kulkarni. A limited-edition compilation of her classics was later produced by her granddaughter, Nazaneen Jalaludheen.
4. George L. The Suriani Kitchen. ISBN 9789380032917 / 9789383260782. The reference work on Syrian Christian cooking, with substantial historical framing.
5. George L. The Kerala Kitchen: Recipes and Recollections from the Syrian Christians of South India. Hippocrene Cookbook Library; multiple editions, including an expanded edition with a foreword by Abraham Verghese. ISBN 9780781811842 / 9780781813440 / 9780781814447.
6. Kaimal M. Curried Favors: Family Recipes from South India. 1996. Reissued as Savoring the Spice Coast of India: Fresh Flavors from Kerala, 2000.
7. Mathew, Mrs K. M. (Annamma Mathew, 1922–2003). Titles confirmed by name: Pachakala (her first cookbook); Kerala Cookery; Arogya Pachakam; Aadhunika Pachakam; and in English Flavours of the Spice Coast. A centenary compilation, Mrs K. M. Mathew's Finest Recipes, was issued by Penguin. Her column Pachakavidhi began in Malayala Manorama on 30 May 1953 and ran for five decades; she was founding chief editor of Vanitha from 1975.
8. Mrs B. F. Varughese — named alongside Mrs K. M. Mathew as an eminent Kerala cookbook author of the same era. No title, publisher or year could be confirmed; listed here as a lead, not as a source.
9. Paul N. Syrian Christian home cooking, published in periodicals and taught through her Kochi classes. No book was identified; cited in this book only as a practitioner-teacher.
10. Radhakrishna S. Books on South Indian regional and community cooking, including work on heritage grains and textiles.
11. Malayalam-language sources named by Azeez Tharuvana as the substantive Malabar culinary literature: Nysa Ayesha, Athishayapathiri (documenting some forty pathiri varieties); Hayisa Moosa, Malabar Pachakam; N. P. Hafiz Mohamed, Keralathile Muslim Streekalude Varthamanakalam; T. V. Achyuta Varrier, "Nalukoottavum Inchithairum"; and the work of Shameer Bharathannoor.
12. A Pinch of Kerala, self-published.

Indian food history and the wider Indian shelf

13. Achaya KT. Indian Food: A Historical Companion. Oxford University Press, 1994. The source of the "floodgate" passage on Portuguese introductions, of the Sangam-era datings of appam, idiyappam, idli, dosai and vada, and of the grão etymology behind "Bengal gram" and "horse gram."
14. Achaya KT. A Historical Dictionary of Indian Food. Oxford University Press, 1998.
15. Achaya KT. The Story of Our Food.
16. Sen CT. Feasts and Fasts: A History of Food in India. Reaktion Books, 2015. Also Curry: A Global History and Food Culture in India.
17. Collingham L. Curry: A Tale of Cooks and Conquerors. 2006. The author publishes as both Lizzie Collingham and E. M. Collingham; check the edition before citing.
18. Reshii MH. The Flavour of Spice. Hachette India, 2017. Not a Kerala book, but the best contemporary Indian writing on spice as a material.
19. Husain S. The Emperor's Table: The Art of Mughal Cuisine; and her translation of the Nuskha-e-Shahjahani. Used to establish what Thalassery biriyani is not.
20. Singh, Mrs Balbir. Mrs Balbir Singh's Indian Cookery. 1961. The book that established the modern Indian cookbook in English.
21. Jaffrey M. An Invitation to Indian Cooking. Reissued 2023 with a foreword by Yotam Ottolenghi. Penguin Random House.
22. Sodha M. East: 120 Vegetarian and Vegan Recipes from Bangalore to Beijing; and Made in India. Consulted for the handling of metric and American measurement editions of the same book.
23. Krishna P. Indian-ish: Recipes and Antics from a Modern American Family.

Craft references outside Indian food

24. Nosrat S. Salt Fat Acid Heat. Consulted as the model for a principle-led rather than recipe-led structure.
25. Ottolenghi Y. SIMPLE. Consulted for its per-recipe icon system, which this book adapts.
26. Ottolenghi Y, Tamimi S. Jerusalem: A Cookbook.
27. Sharma N. The Flavor Equation.
28. López-Alt JK. The Food Lab: Better Home Cooking Through Science.
29. The Recipe Writer's Handbook, as adapted in the Cookbook Style Guide (PDF), https://archangelink.com/wp-content/uploads/2018/10/AI_Cookbook-Style_Guide.pdf.
30. The Complete Recipe Writing Guide, winner of an International Association of Culinary Professionals award; noted via the Academy of Nutrition and Dietetics.
31. America's Test Kitchen. "How we make our recipes failproof" and "The five-recipe test." https://www.americastestkitchen.com — the recipe-testing standard this book's testing protocol is written against.
32. Martel P. "Recipe Writing for Clarity and Content." https://priscillamartel.com/recipe-writing-for-clarity-and-content/

Diet and health cookbooks reviewed

33. Govindji A, Kapoor S. Healthy Indian Cooking for Diabetes: Delicious Khana for Life. Grub Street; Indian edition also published. ISBN 9781856267892 / 9788179913574. The most credible incumbent in this category.
34. Fridel MA. Indian Cuisine Diabetes Cookbook: Savory Spices and Bold Flavors of South Asia. ISBN 9781580405991.
35. Khan S. 150 Best Indian, Asian, Caribbean and More Diabetes Recipes. Robert Rose. ISBN 9780778804918.
36. Greger M. The How Not to Diet Cookbook; and the Daily Dozen framework, NutritionFacts.org. Consulted for its endnote-and-plain-language model of citing science in a trade cookbook.
37. Mosley M. The Fast 800. Consulted for the four-week programme framing.
38. Pinch of Nom, Pan Macmillan. Consulted for its icon system and its stated use of twenty home testers per recipe.
39. Two self-published competitor titles were reviewed for market positioning only and are not sources for anything in this book: Diabetes Diet & Lifestyle Indian Cookbook for Prediabetes and Type 2 (ASIN B0F5MPPCJD) and Indian Diabetic Cookbook Over 60 (ASIN B0D2P5X8KW). Author names on both appear to be pen names and could not be confirmed.

Section 6 — A note on what this book does not claim

A bibliography usually shows what a book asserts. This one should also show what it refuses to.

Turmeric or curcumin for blood sugar or cholesterol at culinary doses. The trials that move glycated haemoglobin use one to two grams a day of curcuminoids; a generous cooking quantity supplies perhaps fifteen to thirty milligrams. The larger meta-analysis found low-density-lipoprotein cholesterol unchanged. Declined with it: that black pepper "boosts turmeric absorption by 2,000 per cent" — one small 1998 pharmacokinetic study, co-authored by the founder of a company selling a piperine product, measuring no clinical outcome.

Cinnamon for blood sugar. A Cochrane review found insufficient evidence; the positive meta-analysis found 0.09 percentage points of glycated haemoglobin. The doses trialled also breach the coumarin tolerable daily intake.

Curry leaves for diabetes or cholesterol. The one substantial human trial used twelve grams of powder daily — roughly ten servings' worth — and found a transient glucose change and no change in lipids. The rest is rodent work.

Capsaicin as a route to fat loss. About thirty-four kilocalories a day of extra resting expenditure, and appetite compensates. Chilli earns its place here as a way to eat well on less salt.

Coconut oil as a healthy fat or a source of medium-chain triglycerides. Sixteen pooled trials: low-density-lipoprotein cholesterol rises against non-tropical vegetable oils, with no effect on weight, body fat, waist, glucose or C-reactive protein. True medium-chain fatty acids are about eight per cent of it.

Fermented batters as a source of vitamin B12. The primary study of idli batter reports riboflavin, thiamine and folate, and no B12. Much of what assays detect in fermented plant foods may be inactive analogue.

Bitter gourd and okra water as glycaemic treatments. Two independent syntheses of the bitter gourd trials found no effect on glycated haemoglobin or fasting glucose; the okra evidence circulating online is a review of 388 rodents. Both are excellent low-energy vegetables, and are used generously here on that basis alone.

Garcinia or kudampuli extract for weight loss. Under a kilogram, from poor trials, confidence interval touching zero, and a documented signal of severe liver injury including death. The souring rind in a fish curry is a different exposure and is explicitly not implicated — a distinction this book insists on in both directions.

Jackfruit as a treatment for diabetes. One small, short, single-centre, industry-funded trial, led in part by the product's inventor, in which replacing part of the rice with a high-fibre flour moved glycated haemoglobin by a quarter of a percentage point. The mechanism is displacement and fibre.

And, categorically: no food in this book prevents, treats or cures any disease. Foods change the composition of a plate; plates change energy, carbohydrate, fibre, saturated fat, sodium and potassium; and those changes shift measurable risk markers over months. That is the whole chain of causation claimed here, and every link in it is cited above.

Declining these claims costs the book nothing it could honestly have had, and it is the reason the rest can be trusted. A book willing to tell you that turmeric is not medicine has earned the right to tell you that a pulse on every plate, a smaller portion of rice, less oil and less salt genuinely work — because that recommendation survived the same test the others failed.