Osteoporosis is a condition causing weakening of the bone due to loss of bone substance. Women are about four times more likely to be affected by osteoporosis than men. Osteoporosis may occur after the menopause or as a result of malnutrition, hyperthyroidism, alcoholism, kidney disease. Osteoporosis may occur after treatment with antiepileptic drugs, proton pump inhibitors, antidepressants, corticosteroids or chemotherapy. learn more ...