Primary osteoporosis is a systemic bone disease characterized by reduced bone mass and degradation of bone microstructure, resulting in increased brittleness of bone and easy fracture. The causes of osteoporosis are: 1. calcium deficiency. 2, calcitonin and vitamin D deficiency. 3, when eating a lot of acidic food, the body will naturally consume calcium in the bones to neutralize the acidity of the blood to maintain the acid-base balance, so the acidic body is also one of the important causes of calcium loss and osteoporosis. Suggestions: 1, maintain a good state of mind, avoid excessive psychological stress. 2, quit smoking, quit drinking, low salt, light diet. 3, appropriate outdoor exercise, appropriate amount of sunlight exposure. 4. Maintain healthy habits, avoid staying up late and inappropriate lifestyle. 5. Control the structure of your diet. 6. We recommend you to consult an orthopedic department for reasonable calcium supplementation.