Tai V, Leung W, Grey A, et al. Calcium intake and bone mineral density: systematic review and meta-analysis. BMJ. 2015 Sep 29;351:h4183. doi: 10.1136/bmj.h4183. (Review) PMID: 26420598
CONCLUSIONS: Increasing calcium intake from dietary sources or by taking calcium supplements produces small non-progressive increases in BMD, which are unlikely to lead to a clinically significant reduction in risk of fracture. EvidenceUpdates http://j.mp/1NznuqC
Bolland MJ, Leung W, Tai V, et al. Calcium intake and risk of fracture: systematic review. BMJ. 2015 Sep 29;351:h4580. doi: 10.1136/bmj.h4580. (Review) PMID: 26420387
CONCLUSIONS: Dietary calcium intake is not associated with risk of fracture, and there is no clinical trial evidence that increasing calcium intake from dietary sources prevents fractures. Evidence that calcium supplements prevent fractures is weak and inconsistent. EvidenceUpdates http://j.mp/1NznBTd