Milk not only supplements calcium, but is also very beneficial for weight loss. In addition to protein, dairy products are also rich in calcium, both of which help with weight loss. Especially dairy products contain a high amount of leucine, which is beneficial for protein formation and can indirectly stimulate subcutaneous fat dissolution and consumption. Research has also found that moderate intake of leucine in the diet can cause changes in cellular biochemical processes, reducing the body's absorption of calories. So, which type of milk is more worth buying? Let's take a look together. Is whole milk more worth buying? Milk containing various fat soluble vitamins can be divided into three types based on their fat content: whole milk, semi skimmed milk, and skimmed milk. The fat content of whole milk is around 3.3%, while the fat content of semi skimmed milk is usually 1.0% 0-1.5%. The fat content of skimmed milk can be reduced to 0.5% or even below. If you drink 300 ml of milk every day, the difference between full fat milk and skimmed milk is about 8 grams of fat, which is equivalent to the amount of fat in a piece of Braised pork belly. The difference is not too big. Moreover, some fat soluble vitamins in milk, such as vitamin A, vitamin D, vitamin E, vitamin K, etc., are present in the fat content of milk. If the fat is removed, these vitamins will also be lost in large quantities. If for some reason it is necessary to strictly control the intake of fat, it is also possible to choose semi skimmed or skimmed milk. Is A2 milk, which is popular in the market, more worth buying? Lactose intolerant individuals can try A2 milk, which refers to a type of casein in milk. The main difference between A1 and A2 beta casein is the form of the 67th amino acid in their molecular structure. A1 type binds to histidine, while A2 type binds to proline. It is precisely because of the slight structural differences that A1 and A2 milk have different metabolites in the body. A1 milk produces a substance called BCM-7, and some studies have found that drinking A1 milk is more likely to lead to lactose intolerance. In fact, existing animal experiments have shown that BCM-7 also has certain immune regulatory effects, and whether A2 milk is more beneficial to health remains to be studied. Therefore, for ordinary milk, everyone can still drink it with confidence. Of course, friends with lactose intolerance can also try A2 milk. Is milk more worth buying than yogurt? The nutritional value is basically the same. In fact, yogurt is also a high-quality source of calcium. When making yogurt, add lactic acid bacteria or yogurt to regular milk and let it ferment at a certain temperature. Therefore, the nutritional value of yogurt is basically the same as that of milk, and it is more beneficial for human absorption. It is also more friendly to people with lactose intolerance. In addition, beneficial bacteria in yogurt also have the function of maintaining intestinal health. Adults can usually drink milk and yogurt together, such as drinking milk in the morning and yogurt in the afternoon. It is recommended to prioritize purchasing low sugar or sugar free yogurt when making a purchase. (Xinhua News Agency) Wen/Yu Kang (Professor of Clinical Nutrition at Peking Union Medical College Hospital)