title: [Abnormalities of vitamin D metabolism in the aged].
mesh_terms: D000328:Adult; D000368:Aged; D002118:Calcium / Q000378:metabolism; D005260:Female; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000378:metabolism; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D014807:Vitamin D; D002118:Calcium