title: Osteoporosis--a problem of bone formation?
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007103:Immobilization; D008297:Male; D010006:Osteoblasts / Q000502:physiology; D010012:Osteogenesis; D010024:Osteoporosis / Q000188:drug therapy / Q000209:etiology / Q000503:physiopathology*; D011247:Pregnancy; D011248:Pregnancy Complications