1. Nikooyeh, B, Abdollahi, Z, Hajifaraji, M et al. (2018) Healthy changes in some cardiometabolic risk factors accompany the summertime higher serum 25-hydroxyvitamin D in Iranian children: National Food and Nutrition Surveillance. Public Health Nutr. Published online: 27 March 2018. doi: 10.1017/S1368980018000630.
2. Ji, L, Gupta, M & Feldman, BJ (2016) Vitamin D regulates fatty acid composition in subcutaneous adipose tissue through Elovl3. Endocrinology 157, 91–97.
3. Cheng, S, So, WY, Zhang, D et al. (2016) Calcitriol reduces hepatic triglyceride accumulation and glucose output through Ca2+/CaMKKβ/AMPK activation under insulin-resistant conditions in type 2 diabetes mellitus. Curr Mol Med 16, 747–758.
4. Zittermann, A, Frisch, S, Berthold, HK et al. (2009) Vitamin D supplementation enhances the beneficial effects of weight loss on cardiovascular disease risk markers. Am J Clin Nutr 89, 1321–1327.
5. Jorde, R & Grimnes, G (2018) Exploring the association between serum 25-hydroxyvitamin D and serum lipids – more than confounding? Eur J Clin Nutr 72, 526–533.
6. Patwardhan, VG, Khadilkar, AV, Chiplonkar, SA et al. (2015) Varying relationship between 25-hydroxy-vitamin D, high density lipoprotein cholesterol, and serum 7-dehydrocholesterol reductase with sunlight exposure. J Clin Lipidol 9, 652–657.
7. Patwardhan, VG, Mughal, ZM, Padidela, R et al. (2017) Randomized control trial assessing impact of increased sunlight exposure versus vitamin D supplementation on lipid profile in Indian vitamin D deficient men. Indian J Endocrinol Metab 21, 393–398.
8. Gaksch, M, Jorde, R, Grimnes, G et al. (2017) Vitamin D and mortality: individual participant data meta-analysis of standardized 25-hydroxyvitamin D in 26916 individuals from a European consortium. PLoS One 12, e0170791.
9. Boucher, BJ (1998) Inadequate vitamin D status: does it contribute to the disorders comprising syndrome ‘X’? Br J Nutr 79, 315–327.
10. Boucher, BJ (2012) Is vitamin D status relevant to metabolic syndrome? Dermatoendocrinology 4, 212–224.
11. Reaven, GM (1988) Banting lecture 1988. Role of insulin resistance in human disease. Diabetes 37, 1595–1607.
12. Reaven, GM (2001) Syndrome X: a short history. Ochsner J 3, 124–125.
13. Alberti, KG, Eckel, RH, Grundy, SM et al. (2009) Harmonizing the metabolic syndrome: a joint interim statement of the International Diabetes Federation Task Force on Epidemiology and Prevention; National Heart, Lung, and Blood Institute; American Heart Association; World Heart Federation; International Atherosclerosis Society; and International Association for the Study of Obesity. Circulation 120, 1640–1645.
14. Forman, JP, Curhan, GC & Taylor, EN (2008) Plasma 25-hydroxyvitamin D levels and risk of incident hypertension among young women. Hypertension 52, 828–832.
15. Mirhosseini, N, Vatanparast, H & Kimball, SM (2017) The association between serum 25(OH)D status and blood pressure in participants of a community-based program taking vitamin D supplements. Nutrients 9, E1244.
16. Al-Khalidi, B, Kimball, SM, Rotondi, MA et al. (2017) Standardized serum 25-hydroxyvitamin D concentrations are inversely associated with cardiometabolic disease in US adults: a cross-sectional analysis of NHANES, 2001–2010. Nutr J 16, 16.
17. Zhang, R, Li, B, Gao, X et al. (2017) Serum 25-hydroxyvitamin D and the risk of cardiovascular disease: dose–response meta-analysis of prospective studies. Am J Clin Nutr 105, 810–819.
18. Pike, JW & Christakos, S (2017) Biology and mechanisms of action of the vitamin D hormone. Endocrinol Metab Clin North Am 46, 815–843.
19. Trochoutsou, AI, Kloukina, V, Samitas, K et al. (2015) Vitamin-D in the immune system: genomic and non-genomic actions. Mini Rev Med Chem 15, 953–963.
20. Hossein-nezhad, A, Spira, A & Holick, MF (2013) Influence of vitamin D status and vitamin D3 supplementation on genome wide expression of white blood cells: a randomized double-blind clinical trial. PLoS One 8, e58725.
21. Scott, JF, Das, LM, Ahsanuddin, S et al. (2017) Oral vitamin D rapidly attenuates inflammation from sunburn: an interventional study. J Invest Dermatol 137, 2078–2086.
22. Shirts, BH, Howard, MT, Hasstedt, SJ et al. (2012) Vitamin D dependent effects of APOA5 polymorphisms on HDL cholesterol. Atherosclerosis 222, 167–174.
23. Vimaleswaran, KS, Cavadino, A & Hypponen, E (2013) APOA5 genotype influences the association between 25-hydroxyvitamin D and high density lipoprotein cholesterol. Atherosclerosis 228, 188–192.
24. Dopico, XC, Evangelou, M, Ferreira, RC et al. (2015) Widespread seasonal gene expression reveals annual differences in human immunity and physiology. Nat Commun 6, 7000.
25. Grant, WB, Bhattoa, HP & Boucher, BJ (2017) Seasonal variations of US mortality rates: roles of solar ultraviolet-B doses, vitamin D, gene expression, and infections. J Steroid Biochem Mol Biol 173, 5–12.
26. Grant, WB (2011) An estimate of the global reduction in mortality rates through doubling vitamin D levels. Eur J Clin Nutr 65, 1016–1026.
27. Garland, CF, Kim, JJ, Mohr, SB et al. (2014) Meta-analysis of all-cause mortality according to serum 25-hydroxyvitamin D. Am J Public Health 104, e43–e50.
28. Veloudi, P, Jones, G & Sharman, JE (2017) Effectiveness of vitamin D supplementation for cardiovascular health outcomes. Pulse (Basel) 4, 193–207.
29. Lappe, J, Watson, P, Travers-Gustafson, D et al. (2017) Effect of vitamin D and calcium supplementation on cancer incidence in older women: a randomized clinical trial. JAMA 317, 1234–1243.
30. Grant, WB & Boucher, BJ (2017) Randomized controlled trials of vitamin D and cancer incidence: a modeling study. PLoS One 12, e0176448.
31. Grant, WB, Boucher, BJ, Bhattoa, HP et al. (2018) Why vitamin D clinical trials should be based on 25-hydroxyvitamin D concentrations. J Steroid Biochem Mol Biol 177, 266–269.
32. Raed, A, Bhagatwala, J, Zhu, H et al. (2017) Dose responses of vitamin D3 supplementation on arterial stiffness in overweight African Americans with vitamin D deficiency: a placebo controlled randomized trial. PLoS One 12, e0188424.