title: [Aging and vitamin D].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002118:Calcium / Q000378:metabolism; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000378:metabolism; D011247:Pregnancy; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D010281:Parathyroid Hormone; D014807:Vitamin D; D002118:Calcium