Osteoporosis is a condition that makes bones weak and brittle. The risk increases with age, especially in postmenopausal women. Other risk factors include family history, lack of exercise, low-calcium diet, and smoking. Prevention and treatment methods include increasing calcium and vitamin D intake, engaging in weight-bearing exercises, quitting smoking, limiting alcohol, and using medications to strengthen bone density if necessary. Regular bone density tests can help detect and manage osteoporosis early.