Milk usually contains between 100 mg and 120 mg of calcium per 100 ml. Milk is rich in minerals as well as vitamin A and vitamin B2, which are beneficial for children’s growth and development. Milk is the best source of calcium for the body because it has a calcium to phosphorus ratio of 1.2:1 and has a relatively high digestibility and absorption rate. The Dietary Pagoda recommends that adults need about 800 milligrams of calcium a day, so theoretically, as long as you consume 700 to 800 milliliters of milk, you will be able to meet all of your body’s calcium needs. Plus, other foods are also rich in calcium, so in general, adults are recommended to consume about 300 milliliters of milk a day. Milk is not only rich in calcium, it is also very rich in protein, with 3.2 to 4 grams of protein per 100 milliliters of milk, as well as being a good source of nutrients as it is rich in fat and carbohydrates. Those who are allergic to milk should not drink milk, and those who are milk intolerant are advised to replace it with yogurt and comfort milk.