Vitamin D deficiency is common among individuals with overweight and obesity, yet the impact of weight loss on vitamin D status remains unclear. This randomized controlle [...]

Vitamin D deficiency has been linked to increased hip fracture risk and lower femoral neck bone mineral density (BMD), but its relationship to cortical and trabecular bon [...]

Recent research in children with Phenylketonuria (PKU), the most common inherited disorder of amino acid metabolism, suggests they have decreased bone mineral density (BM [...]

Back pain is a prevalent and costly ailment for older Americans, with significant personal and population level impact. Low serum 25-hydroxyvitamin D [25(OH) vitamin D] [...]

Vitamin D deficiency may be common among HIV infected individuals. Similar to individuals not affected by HIV, HIV-infected patients are affected by limited UV-B exposu [...]