Decreased bioavailability of vitamin D in obesity.


BACKGROUND Obesity is associated with vitamin D insufficiency and secondary hyperparathyroidism. OBJECTIVE This study assessed whether obesity alters the cutaneous production of vitamin D(3) (cholecalciferol) or the intestinal absorption of vitamin D(2) (ergocalciferol). DESIGN Healthy, white, obese [body mass index (BMI; in kg/m(2)) > or = 30] and… (More)


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