Osteoporosis is a condition where bones become weak and are more likely to fracture. To prevent and improve osteoporosis, you can: eat foods rich in calcium and vitamin D, such as milk, tofu, and fish; engage in regular weight-bearing exercises, like walking and weightlifting; avoid smoking and excessive alcohol consumption; and take osteoporosis medications as prescribed by your doctor if needed. Maintaining a healthy lifestyle is crucial for the prevention and treatment of osteoporosis.