Milk. It does a body good. Or does it? According to the Celebrity Diet Doctor, one of milk's major health claims -- that it helps prevent osteoporosis by supplying the body with much-needed calcium -- is totally bunk.

In fact, some even believe that milk causes osteoporosis. A study done by the dairy industry allegedly found that post-menopausal women who drank three glasses of milk a day lost bone density twice as fast as those who drank no milk at all. And, as Jacki told us a few months ago, there are other interesting health risks associated with milk.

Still, take everything with a grain of salt -- Milk is a good source of calcium and protein and as long as you practice the 'everything in moderation' mantra, I think you'll be fine. And I'm not giving up my post-workout glass of skim anytime soon.