Drinking milk alone cannot prevent osteoporosis. Fresh milk is rich in calcium, and 100 ml of milk contains about 100 mg of calcium, so calcium supplementation is relatively reliable. However, the prevention of osteoporosis in middle-aged and elderly people cannot rely on drinking milk alone. There are four points to prevent osteoporosis: First, ensure the daily intake of milk or yogurt 250-500 grams; second, adhere to the daily outdoor activities for at least one hour, because more sunlight can increase the synthesis of vitamin D in the body to promote the body’s absorption of calcium; third, eat more green leafy vegetables, because the vitamin K in green leafy vegetables is good for the health of the bones; fourth, eat more soy foods, because the soybean Isoflavone components involved in the body’s calcium and phosphorus metabolism. In addition to milk, there are other foods that are rich in calcium, such as black sesame, shrimp, fish bones, green leafy vegetables, etc.