Silver Book Fact
A meta-analysis of clinical trials found that Vitamin D supplements reduced the risk of vertebral fractures by around 37%.
Papadimitropoulos E, Wells G, Shea B, Gillespie W, et al. VIII: Meta-analysis of the efficacy of vitamin d treatment in preventing osteoporosis in postmenopausal women. Endocr Rev. 2002; 23(4): 560-9. http://edrv.endojournals.org/cgi/content/full/23/4/560