Osteoporosis is a condition where bones become weak and fragile. To prevent osteoporosis, you should maintain a balanced diet with enough calcium and vitamin D, such as milk, cheese, leafy greens, and fish. Regular exercise, like walking, jogging, and strength training, can help strengthen your bones. Avoid smoking and excessive alcohol consumption, as these can accelerate bone loss. Regular check-ups can help detect and treat osteoporosis early.