Primary osteoporosis is a common bone disease, mainly affecting the elderly. As people age, the calcium and other minerals in their bones gradually decrease, making the bones weak and prone to fractures. The most common fracture sites are the hips, spine, and wrists. Key prevention measures include maintaining a healthy lifestyle with adequate calcium and vitamin D intake, regular exercise, and avoiding smoking and excessive alcohol consumption. If you are at risk for osteoporosis, it is recommended to have regular bone density tests and consult a doctor.