JAMA : the journal of the American Medical Association
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Review Meta Analysis
Fracture prevention with vitamin D supplementation: a meta-analysis of randomized controlled trials.
The role and dose of oral vitamin D supplementation in nonvertebral fracture prevention have not been well established. ⋯ Oral vitamin D supplementation between 700 to 800 IU/d appears to reduce the risk of hip and any nonvertebral fractures in ambulatory or institutionalized elderly persons. An oral vitamin D dose of 400 IU/d is not sufficient for fracture prevention.