calcium:

A large, randomized study at 11 U.S. hospitals including Dartmouth-Hitchcock Medical Center found that vitamin D and calcium supplements fail to protect against developing colorectal cancer. The study ...
Created on 29 October 2015
... because their energy intake is too low to support their activity levels. Amenorrhea can be linked to serious health problems, including the loss of calcium from bones, endometrial hyperplasia and heart ...