title: Vitamin D nutrition is at a crossroads.
authors: Anthony W
authors: AW
authors: Norman
mesh_terms: D050071:Bone Density Conservation Agents / Q000008:administration & dosage; D002908:Chronic Disease / Q000517:prevention & control; D019587:Dietary Supplements; D005527:Food, Fortified; D006801:Humans; D009751:Nutritional Requirements; D013472:Sunlight; D014807:Vitamin D / Q000008:administration & dosage* / Q000031:analogs & derivatives / Q000097:blood / Q000502:physiology*; D014808:Vitamin D Deficiency / Q000150:complications / Q000453:epidemiology* / Q000517:prevention & control
chemical_list: D050071:Bone Density Conservation Agents; D014807:Vitamin D; C104450:25-hydroxyvitamin D