Background The increased prevalence of osteoporosis among people with homocystinuria suggests that a high serum homocysteine concentration may weaken bone by interfering with collagen cross-linking, thereby increasing the risk of…
Limited data from human observational studies suggest that early supplementation with 10 µg/d (400 IU/d) or less of vitamin D may not reduce the risk for type 1 diabetes but…
Background Observational and some experimental data suggest that low intake of vitamin K may be associated with an increased risk of fracture. Objective To assess whether oral vitamin K…
Vitamin D insufficiency is more prevalent among African Americans (blacks) than other Americans and, in North America, most young, healthy blacks do not achieve optimal 25-hydroxyvitamin D [25(OH)D] concentrations at…