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Vitamin A and your bones - Men's Health - MSN Health & Fitness (Site not responding. Last check: 2007-10-23) |
 | | Mae West once said, "Too much of a good thing is...wonderful." Whatever else she had in mind, it certainly wasn’t vitamin A. Although doctors have long known that very large amounts of vitamin A are toxic, studies show that modest doses previously considered safe can increase your risk of fracture. |
 | | Bone continually undergoes a process of remodeling, which entails resorption and formation. |
 | | During resorption (A), cells known as osteoclasts attach to the bone surface and break it down, releasing calcium into the blood stream and leaving trenches in the bone (B). |
| www.health.msn.com /menshealth/articlepage.aspx?cp-documentid=100110614 (1845 words) |