Oct 12, 2013 — A review of clinical trials using vitamin D to build bone density in middle-aged women finds that it doesn't help. That may be because those women aren't generally low on calcium and that D helps the body absorb calcium in the gut only if it's seriously lacking. It may do more good in the elderly.
Aug 13, 2012 — Calcium has been touted to stave off osteoporosis and promote bone health. But new research suggests going overboard on calcium consumption could lead to kidney stones or even a heart attack.