Vitamin D, calcium, and osteoporosis

Patient level pooled analysis of 68500 patients from seven major vitamin D fracture trials in US and Europe: "- This individual patient data analysis indicates that vitamin D given alone in doses of 10-20 μg is not effective in preventing fractures. By contrast, calcium and vitamin D given together reduce hip fractures and total fractures, and probably vertebral fractures, irrespective of age, sex, or previous fractures.