title: Calcium and osteoporosis.
mesh_terms: D000368:Aged; D015519:Bone Density; D002118:Calcium / Q000172:deficiency / Q000378:metabolism; D002136:Calcium, Dietary / Q000627:therapeutic use*; D005260:Female; D006620:Hip Fractures / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D010018:Osteomalacia / Q000209:etiology; D010024:Osteoporosis / Q000150:complications / Q000378:metabolism / Q000517:prevention & control*
chemical_list: D002136:Calcium, Dietary; D002118:Calcium