Calcium Curious: How Much is Enough?

We seem to get more mail about calcium than any other single nutrient. The questions and comments vary, but many reflect the same exasperation. On the one hand, we've been told to take calcium pills to keep bones strong, prevent osteoporosis and reduce the risk of fracture. On the other, information seems to keep popping up that calls into question the value of calcium -- and even suggests that large amounts might be counterproductive. Throw in the occasional query about calcium absorption and which calcium pills to take, and the mailbag -- or, more literally, the e-mail inbox -- gets full.

September 1, 2009