title: Vitamin D: the bone builder.
mesh_terms: D002136:Calcium, Dietary / Q000008:administration & dosage*; D050723:Fractures, Bone / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology; D014807:Vitamin D / Q000008:administration & dosage / Q000502:physiology*
chemical_list: D002136:Calcium, Dietary; D014807:Vitamin D