Clinical calcium
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Although vitamin D improves bone mineral density 0.66% per year at spine site and 1.23% per year at femoral neck site, respectively, vitamin D is useful for preventing osteoporotic fractures, especially hip fractures in the elderly. Vitamin D affects microstructure and bone turnover for osteoporotic bone to become strong bone. And vitamin D improves muscle function to prevent falls in the elderly. Moreover the appropriate amount and treatment target of vitamin D must be considered for the elderly with many different diseases.