Racial/ethnic considerations in making recommendations for vitamin D for adult and elderly men and women

摘要: Vitamin D is acquired through diet and skin exposure to ultraviolet B light. Skin production determined by length of exposure, latitude, season, degree pigmentation. Blacks produce less vitamin D3 than do whites in response usual levels sun have lower 25-hydroxyvitamin [25(OH)D] concentrations winter summer. the United States also use dietary supplements frequently whites. However, blacks appear similar capacities absorb after repeated high doses There a growing consensus that serum 25(OH)D at least 75-80 nmol/L are needed for optimal bone health, on basis studies older white subjects living Europe States. The show increasing this level decreases parathyroid hormone (PTH) concentrations, rates loss, reduces fractures. Among US blacks, low associated with higher PTH, which mineral density. decrease PTH turnover marker among blacks. These findings suggest improving status would benefit as well On conducted temperate zone, intake 3 maintain group average concentration 80 ∼1000 IU/d. Broad-based supplementation remove insufficiency contributing cause osteoporosis.