Nutritional dietary guidelines 1.Supplement calcium, phosphorus and vitamin D and other related nutrients through diet to prevent or treat osteoporosis. 2.Ensure adequate calcium intake: supply 800~1000 mg of calcium from diet every day; for post-menopausal women and the elderly, a higher daily calcium intake of 1000~1500 mg is appropriate. 3, moderate intake of phosphorus: to ensure daily intake of 1250 mg of phosphorus from food, but should not be too high. Some food in the process of adding a variety of phosphorus additives, should take into account the impact of this factor when eating. 4, pay attention to the supply of vitamin D: appropriate sun exposure or sunbathing, usually does not cause vitamin D deficiency, and at the same time can increase calcium absorption. If the sun exposure is less, attention should be paid to the supply of vitamin D-rich food. Diet advisable food: Calcium-rich foods include milk, fish, shrimp and crab, green vegetables, dairy products, etc. Drink more bone broth and use more vitamin D rich foods, such as sardines, salmon, mackerel, milk, eggs, etc. You can also add cod liver oil and other vitamin D containing preparations. Avoid food: avoid high phosphate additives, animal offal, etc., because the offal contains 20 to 50 times more phosphorus than calcium.