Takahashi Y, Soejima Y, Fukusato T. Animal models of nonalcoholic fatty liver disease/nonalcoholic steatohepatitis. World J Gastroenterol. 2012;18:2300-8.
 Nakano T, Cheng YF, Lai CY, Hsu LW, Chang YC, Deng JY, et al. Impact of artificial sunlight therapy on the progress of non-alcoholic fatty liver disease in rats. J Hepatol. 2011;55:415-25.
 Tai K, Need AG, Horowitz M, Chapman IM. Vitamin D, glucose, insulin, and insulin sensitivity. Nutrition, 2008;24:279-85.
 Kong M, Zhu L, Bai L, Zhang X, Chen Y, Liu S, et al. Vitamin D deficiency promotes nonalcoholic steatohepatitis through impaired enterohepatic circulation in animal model. Am J Physiol Gastrointest Liver Physiol. 2014;307:G883-93.
 Barchetta I, Carotti S, Labbadia G, Gentilucci UV, Muda AO, Angelico F, et al. Liver vitamin D receptor, CYP2R1, and CYP27A1 expression: relationship with liver histology and vitamin D3 levels in patients with nonalcoholic steatohepatitis or hepatitis C virus. Hepatology. 2012;56:2180-7.
 Bril F, Maximos M, Portillo-Sanchez P, Biernacki D, Lomonaco R, Subbarayan S, et al. Relationship of vitamin D with insulin resistance and disease severity in non-alcoholic steatohepatitis. J Hepatol. 2015;62, 405–11.
 Han H, Cui M, You X, Chen M, Piao X, Jin G. A role of 1,25(OH)2D3 supplementation in rats with nonalcoholic steatohepatitis induced by choline-deficient diet. Nutr Metab Cardiovasc Dis. 2015;25:556- 61.
. Reeves PG, Rossow KL, Lindlauf J. Development and testing of the AIN-93 purified diets for rodents: results on growth, kidney calcification and bone mineralization in rats and mice. J Nutr. 1993;123:1923-31.
 Matthews DR, Hosker JP, Rudenski AS, Naylor BA, Treacher DF, Turner RC. Homeostasis model assessment: insulin resistance and beta-cell function from fasting plasma glucose and insulin concentrations in man. Diabetologia. 1985;28:412-9.
 Chen LW, Chien CH, Kuo SF, Yu CY, Lin CL, Chien RN. Low vitamin D level was associated with metabolic syndrome and high leptin level in subjects with nonalcoholic fatty liver disease: a community-based study. BMC Gastroenterol. 2019;19:126.
 Tsochatzis EA, Papatheodoridis GV, Archimandritis AJ. Adipokines in non-alcoholic steatohepatitis: from pathogenesis to implications in diagnosis in therapy. Mediators Inflamm. 2009;2009:831670.
 Elseweidy MM, Amin RS, Atteia HH, Ali MA. Vitamin D3 intake as regulator of insulin degrading enzyme and insulin receptor phosphorylation in diabetic rats. Biomed Pharmacother. 2017;85:155–9.
 Foroughi M, Maghsoudi Z, Askari G. The effect of vitamin D supplementation on blood sugar and different indices of insulin resistance in patients with non-alcoholic fatty liver disease (NAFLD). Iran J Nurs Midwifery Res. 2016;21:100-4.
 Kelishadi R, Salek S, Salek M, Hashemipour M, Movahedian M. Effects of vitamin D supplementation on insulin resistance and cardiometabolic risk factors in children with metabolic syndrome: a triple-masked controlled trial. J Pediatr (Rio J), 2014;90:28-34.
 Dasarathy J, Varghese R, Feldman A, Khiyami A, McCullough AJ, Dasarathy S. Patients with Nonalcoholic Fatty Liver Disease Have a Low Response Rate to Vitamin D Supplementation. J Nutr. 2017;147:1938-46.
 Beilfuss A, Sowa JP, Sydor S, Beste M, Bechmann LP, Schlattjan M, et al. Vitamin D counteracts fibrogenic TGF-beta signaling in human hepatic stellate cells both receptor-dependently and independently. Gut. 2015;64:791–9.
 Eliades M, Spyrou E. Vitamin D: A new player in non-alcoholic fatty liver disease? World J Gastroenterol. 2015;21:1718–27.
 Barchetta I, Carotti S, Labbadia G, Gentilucci UV, Muda AO, Angelico F, et al. Liver vitamin D receptor, CYP2R1, and CYP27A1 expression: Relationship with liver histology and vitamin D3 levels in patients with nonalcoholic steatohepatitis or hepatitis C virus. Hepatology. 2012;56:2180–7.
 Barchetta I, Cimini FA, Cavallo MG. Vitamin D Supplementation and Non-Alcoholic Fatty Liver Disease: Present and Future. Nutrients. 2017;9. pii: E1015.
 Chiu KC, Chu A, Go VL, Saad MF. Hypovitaminosis D is associated with insulin resistance and beta cell dysfiinction. Am J Clin Nutr. 2004;79:820-5.
 Taylor AV, Wise PH. Vitamin D replacement in Asians with insulin resistance. Postgrad Med J. 1998;74:365-6.
 Erridge C. Endogenous ligands of TLR2 and TLR4:agonists or assistants? J Leukoc Biol. 2010;87:989-99.
 De Souza Santos R, Vianna LM. Effects of cholecalciferol supplementation on blood glucose in an experimental model of type 2 diabetes mellitus in spantenously hypertensive rats and Wistar rats. Clin Chim Acta. 2005;358:146-50.
 Leung PS. The Potential Protective Action of Vitamin D in Hepatic Insulin Resistance and Pancreatic Islet Dysfunction in Type 2 Diabetes Mellitus. Nutrients. 2016;8:147.
 Heaney RP. Vitamin D – Baseline status and effective dose. N Engl J Med. 2012;367:77-8.