Investigations of strategies to address the long term maintenance of bone density in younger women: fracture risk feedback and vitamin D.

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Fractures in the elderly are an important health problem. We previously studied 470 young women, informing them of their level of fracture risk and providing osteoporosis education. Women at higher risk more often started calcium supplements, increased physical activity, and had higher bone density after 2 years than those at low risk. We will test the same women after 11 years to see if these improvements persist and so might reduce fractures in old age. We will also assess the effects of vitamin D on bone health in these women.