| 1. | Feskanich D, Ma J, Fuchs CS, et al. Plasma vitamin D metabolites and risk of colorectal cancer in women. Cancer Epidemiol Biomarkers Prev, 2004, 13(9): 1502-1508. | 
				                                                        
				                                                            
				                                                                | 2. | Lee JE, Li H, Chan AT, et al. Circulating levels of vitamin D and colon and rectal cancer: the Physicians' Health Study and a meta-analysis of prospective studies. Cancer Prev Res (Phila), 2011, 4(5): 735-743. | 
				                                                        
				                                                            
				                                                                | 3. | Ma Y, Zhang P, Wang F, et al. Association between vitamin D and risk of colorectal cancer: a systematic review of prospective studies. J Clin Oncol, 2011, 29(28): 3775-3782. | 
				                                                        
				                                                            
				                                                                | 4. | Yehuda-Shnaidman E, Schwartz B. Mechanisms linking obesity, inflammation and altered metabolism to colon carcinogenesis. Obes Rev, 2012, 13(12): 1083-1095. | 
				                                                        
				                                                            
				                                                                | 5. | Aspray TJ, Bowring C, Fraser W, et al. National Osteoporosis Society vitamin D guideline summary. Age Ageing, 2014, 43(5): 592-595. | 
				                                                        
				                                                            
				                                                                | 6. | 中华人民共和国卫生部疾病控制司. 中国成人超重和肥胖症预防控制指南. 北京: 人民卫生出版社, 2006: 12. | 
				                                                        
				                                                            
				                                                                | 7. | Bosen CJ. Vitamin D insufficiency. N Engl J Med, 2011, 364(1): 248-254. | 
				                                                        
				                                                            
				                                                                | 8. | Braun MM, Helzlsouer KJ, Hollis BW, et al. Colon cancer and serum vitamin D metabolite levels 10-17 years prior to diagnosis. Am J Epidemiol, 1995, 142(6): 608-611. | 
				                                                        
				                                                            
				                                                                | 9. | Grant WB. Ecological studies of the UVB-vitamin D-cancer hypothesis. Anticancer Res, 2012, 32(1): 223-236. | 
				                                                        
				                                                            
				                                                                | 10. | Maalmi H, Ordóñez-Mena JM, Schöttker B, et al. Serum 25-hydroxyvitamin D levels and survival in colorectal and breast cancer patients: systematic review and meta-analysis of prospective cohort studies. Eur J Cancer, 2014, 50(8): 1510-1521. | 
				                                                        
				                                                            
				                                                                | 11. | Irving AA, Duchow EG, Plum LA, et al. Vitamin D deficiency in the Apc Pirc/+ rat does not exacerbate colonic tumorigenesis, while low dietary calcium might be protective. Dis Model Mech, 2018, 11(3): pii: dmm032300. | 
				                                                        
				                                                            
				                                                                | 12. | Shabahang M, Buras RR, Davoodi, et al. Growth inhibition of HT-29 human colon cancer cells by analogues 1, 25-dihydroxyvitamin D3. Cancer Res, 1994, 54(15): 4057-4064. | 
				                                                        
				                                                            
				                                                                | 13. | Eisman JA, Barkla DH, Tutton PJ. Suppression of in vivo growth of human cancer solid tumor xenografts by 1, 25-dihydroxyvitamin D3. Cancer Res, 1987, 47(1): 21-25. | 
				                                                        
				                                                            
				                                                                | 14. | Huerta S, Irwin RW, Heber D, et al. 1alpha, 25-(OH)(2)-D(3) and its synthetic analogue decrease tumor load in the Apc(min) Mouse. Cancer Res, 2002, 62(3): 741-746. | 
				                                                        
				                                                            
				                                                                | 15. | Díaz GD, Paraskeva C, Thomas MG, et al. Apoptosis is induced by the active metabolite of vitamin D3 and its analogue EB1089 in colorectal adenoma and carcinoma cells: possible implications for prevention and therapy. Cancer Res, 2000, 60(8): 2304-2312. | 
				                                                        
				                                                            
				                                                                | 16. | Feldman D, Krishnan AV, Swami S, et al. The role of vitamin D in reducing cancer risk and progression. Nat Rev Cancer, 2014, 14(5): 342-357. | 
				                                                        
				                                                            
				                                                                | 17. | Mathieu C, Adorini L. The coming of age of 1, 25-dihydroxyvitamin D3 analogs as immunomodulatory agents. Trends Mol Med, 2002, 8(4): 174-179. | 
				                                                        
				                                                            
				                                                                | 18. | Scaglione-Sewell BA, Bissonnette M, Skarosi S, et al. A vitamin D3 analog induces a G1-phase arrest in CaCo-2 cells by inhibiting cdk2 and cdk6: roles of cyclin E, p21Waf1, and p27Kip1. Endocrinology, 2000, 141(11): 3931-3939. | 
				                                                        
				                                                            
				                                                                | 19. | Iseki K, Tatsuta M, Uehara H, et al. Inhibition of angiogenesis as a mechanism for inhibition by 1alpha-hydroxyvitamin D3 and 1, 25-hydroxyvitamin D3 of colon carcinogenesis induced by azoxymethane in Wistar rats. Int J Cancer, 1999, 821(5): 730-733. | 
				                                                        
				                                                            
				                                                                | 20. | Lamprecht SA, Lipkin M. Cellular mechanisms of calcium and vitamin D in the inhibition of colorectal carcinogenesis. Ann N Y Acad Sci, 2001, 952: 73-87. | 
				                                                        
				                                                            
				                                                                | 21. | Aggarwal A, Hoebaus J, Tennakoon, et al. Active vitamin D potentiates the anti-neoplastic effects of calcium in the colon: a cross-talk through the calcium-sensing receptor. J Steroid Biochem Mol Biol, 2016, 155(Pt B): 231-238. | 
				                                                        
				                                                            
				                                                                | 22. | Moghaddam AA, Woodward M, Huxley R. Obesity and risk of colorectal cancer: A meta-analysis of 31 studies with 70 000 events. Cancer Epidemiol Biomarkers Prev, 2007, 16(12): 2533-2547. | 
				                                                        
				                                                            
				                                                                | 23. | Sinicrope FA, Foster NR, Sargent DJ, et al. Obesity is an independent prognostic variable in colon cancer survivors. Clin Cancer Res, 2010, 16(6): 1884-1893. | 
				                                                        
				                                                            
				                                                                | 24. | Jain SS, Bird RP. Elevated expression of tumor necrosis factor-α signaling molecules in colonic tumors of Zucker obese (fa/fa) rats. Int J Cancer, 2010, 127(9): 2042-2050. | 
				                                                        
				                                                            
				                                                                | 25. | Teraoka N, Mutoh M, Takasu S, et al. High susceptibility to azoxymethane-induced colorectal carcinogenesis in obese KK-Ay mice. Int J Cancer, 2011, 129(3): 528-535. | 
				                                                        
				                                                            
				                                                                | 26. | Campbell PT, Newton CC, Dehal AN, et al. Impact of body mass index on survival after colorectal cancer diagnosis: the Cancer Prevention Study-II Nutrition Cohort. J Clin Oncol, 2012, 30(1): 42-52. | 
				                                                        
				                                                            
				                                                                | 27. | Meyerhardt JA, Tepper JE, Niedzwiecki D, et al. Impact of body mass index on outcomes and treatment-related toxicity in patients with stage II and III rectal cancer: findings from Intergroup Trial 0114. J Clin Oncol, 2004, 22(4): 648-657. | 
				                                                        
				                                                            
				                                                                | 28. | Endo H, Hosono K, Uchiyama T, et al. Leptin acts as a growth factor for colorectal tumours at stages subsequent to tumour initiation in murine colon carcinogenesis. Gut, 2011, 60(10): 1363-1371. | 
				                                                        
				                                                            
				                                                                | 29. | Wei EK, Giovannucci E, Fuchs CS, et al. Low plasma adiponectin levels and risk of colorectal cancer in men: a prospective study. J Natl Cancer Inst, 2005, 97(22): 1688-1694. | 
				                                                        
				                                                            
				                                                                | 30. | Otake S, Takeda H, Fujishima S, et al. Decreased levels of plasma adiponectin associated with increased risk of colorectal cancer. World J Gastroenterol, 2010, 16(10): 1252-1257. | 
				                                                        
				                                                            
				                                                                | 31. | Gallagher EJ, LeRoith D. Diabetes, antihyperglycemic medications and cancer risk: smoke or fire? Curr Opin Endocrinol Diabetes Obes, 2013, 20(5): 485-494. | 
				                                                        
				                                                            
				                                                                | 32. | Berster JM, Göke B. Type 2 diabetes mellitus as risk factor for colorectal cancer. Arch Physiol Biochem, 2008, 114(1): 84-98. | 
				                                                        
				                                                            
				                                                                | 33. | Yang YX, Hennessy S, Lewis JD. Insulin therapy and colorectal cancer risk among type 2 diabetes mellitus patients. Gastroenterology, 2004, 127(4): 1044-1050. | 
				                                                        
				                                                            
				                                                                | 34. | Giovannucci E. Insulin, insulin-like growth factors and colon cancer: a review of the evidence. J Nutr, 2001, 131(11 Suppl): 3109S-3120S. | 
				                                                        
				                                                            
				                                                                | 35. | Mar AC, Chu CH, Lee HJ, et al. Interleukin-1 receptor type 2 acts with c-Fos to enhance the expression of interleukin-6 and vascular endothelial growth factor a in colon cancer cells and induce angiogenesis. J Biol Chem, 2015, 290(36): 22212-22224. | 
				                                                        
				                                                            
				                                                                | 36. | Flores MBS, Rocha GZ, Damas-Souza DM, et al. Obesity-induced increase in tumor necrosis factor-α leads to development of colon cancer in mice. Gastroenterology, 2012, 143(3): 741-753. e1-e4. |