Milk contains essential amino acids, small fat particles, easy to digest, linoleic acid, carbohydrates, calcium, phosphorus, potassium and vitamins A and B, which is recognized as the best food. However, drinking milk also has taboos. Only by drinking it scientifically can it be beneficial and harmless. Do not add more than 10% sugar to milk, otherwise it will not only be difficult to digest and absorb, but also lead to a decline in nutritional value, and it will stay in the digestive tract and affect gastrointestinal function. Milk can be heated, but not boiled. The reason is that some vitamins will be destroyed after boiling, and the calcium in milk will also be converted into calcium phosphate to precipitate, which will affect the body's absorption. Milk is rich in calcium, so there is no need to supplement calcium. "Calcium-added milk" and "high calcium milk" are unnecessary. Excessive calcium will combine with casein in milk to form clots, which will reduce the nutritional components. Don't just drink milk for breakfast. Because drinking milk on an empty stomach will accelerate gastrointestinal peristalsis and cause malabsorption. The principle of balanced diet requires that it is best to eat a variety of foods at the same time. If you can eat bread, cake and other foods before drinking milk for breakfast, it will be beneficial to the nutritional balance. Don't eat chocolate when drinking milk. The reason is that oxalic acid in chocolate will combine with calcium in milk to form calcium oxalate, which makes calcium not fully utilized. It is not advisable to take medicine with milk instead of water, because milk can react with many drugs, reduce the efficacy and even produce new toxic substances. Related links Milk nutrients Milk is milk with high nutritional value. Studies show that every100g of milk contains 3.5g of protein, 4.0g of fat, 5g of carbohydrate, 93mg of calcium120mg of phosphorus, 0.2mg of iron, 0.04mg of thiamine, 0.13mg of riboflavin, 0.2mg of nicotinic acid, and 0.2mg of vitamin A42. The content of lysine in milk protein is second only to that of eggs. All carbohydrates are low-sweetness lactose, which can promote gastric juice secretion and gastrointestinal peristalsis, and can be converted into lactic acid in the intestine to inhibit the growth of spoilage bacteria. These people are similar to milk. Milk is nutritious and delicious, but it is not suitable for everyone. The following people should pay special attention: lactose in milk of people who are in frequent contact with lead will promote the absorption and accumulation of lead and easily lead to lead poisoning. Therefore, people who are often exposed to lead should not drink ordinary milk. It is suggested to drink yogurt instead, because there is very little lactose in yogurt and most of it becomes lactic acid. People who are allergic to drinking milk may have symptoms such as abdominal pain and diarrhea after drinking milk, and those who are seriously allergic may also induce diseases such as rhinitis, asthma or urticaria. The milk of patients with reflux esophagitis can reduce the pressure of lower esophageal sphincter, thus increasing the reflux of gastric juice or intestinal fluid, so patients with reflux esophagitis should not drink it, otherwise it will aggravate the condition. Abdominal cavity and gastrectomy The number of patients who have undergone abdominal cavity or gastrectomy is reduced due to the influence of lactic acid enzyme in the body. Once drinking milk, lactose will not decompose and ferment in the body, and then produce water, lactic acid and a lot of carbon dioxide, resulting in bloating symptoms. Abdominal pain and diarrhea patients who usually have abdominal pain, diarrhea, bloating and other symptoms will get worse after drinking milk. Irritable bowel syndrome (IBS) is a common functional intestinal disease, which is characterized by the motor function of intestinal muscles and the secretion of mucus by intestinal mucosa, resulting in abnormal irritating physiological reactions, and it is easy to cause allergies after drinking milk.