The New England journal of medicine
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Clinical Trial Controlled Clinical Trial
Vitamin D3 and calcium to prevent hip fractures in elderly women.
Hypovitaminosis D and a low calcium intake contribute to increased parathyroid function in elderly persons. Calcium and vitamin D supplements reduce this secondary hyperparathyroidism, but whether such supplements reduce the risk of hip fractures among elderly people is not known. ⋯ Supplementation with vitamin D3 and calcium reduces the risk of hip fractures and other nonvertebral fractures among elderly women.