Osteoporosis: a group of diseases in where bone resorption exceeds deposit. so bone mass decreases. It is often common in postmenopausal women as estrogen levels decrease. Other factors include insufficient exercise , smoking , poor diet and genetics. the treatment for these diseases include calcium , vitamin d supplements , weight , bearing exercise and hormone replace therapy. To prevent this, you should do exercising. Have a sufficient in calcium and drink less to no carbonated drinks.