title: Teens, calcium and osteoporosis.
mesh_terms: D000293:Adolescent; D002118:Calcium / Q000172:deficiency*; D002648:Child; D015362:Child Nutrition Disorders / Q000150:complications*; D006801:Humans; D018673:Nutrition Policy; D010024:Osteoporosis / Q000209:etiology*
chemical_list: D002118:Calcium