10% ~ 15% of the daily calories of human body comes from protein. Generally speaking, the body does not use protein as a source of heat production. Only when the intake of calories is insufficient, the body uses protein to generate heat. Excessive intake of protein is not only a waste, but also harmful to human body. There are many decomposition products of protein in human body, among which ammonia, ketoacid and urea will have side effects on human body, which not only increases the burden on the liver, but also easily causes indigestion. In the long run, it will affect the function of liver and kidney, lead to emaciation and low immune function. American scientists issued a statement saying that excessive intake of protein will increase the risk of cancer, such as rectal cancer, pancreatic cancer, renal cancer and breast cancer. Eating too much animal protein, such as eggs, milk and meat, can also induce heart disease. Therefore, if the dietary structure of normal people is reasonable, the proportion of protein, fat and carbohydrate is appropriate, and the quality of dietary protein is good, there is no need to supplement protein powder. Patients with gout and liver and kidney failure should limit the intake of protein.

How to eat protein powder?

There are two kinds of protein powder on the market, one is made of soybean and the other is made of milk. Although there are many similarities between the two kinds of protein powder in terms of eating objects and dosage, there are also some differences in eating methods. The inherent smell and taste of protein powder made of soybean are unacceptable to most consumers. If added to other foods, many people will feel "taking medicine" or difficult to swallow. Before eating soybean protein powder, go to the pharmacy to buy empty capsules, put them into "capsules" and then swallow them. Although the following precautions are applicable to both protein powders, they are mainly aimed at whey protein powder.

1. Take according to the recommended intake. Because the raw materials and processes used by each manufacturer are not exactly the same, the label description has its own recommended dosage of protein powder, so users should not increase or decrease it at will. Eating too little can't achieve the expected goal; Eating too much will cause waste or side effects.

2. Do not take it on an empty stomach. Eating protein powder on an empty stomach will be consumed as a general "hot food", wasting valuable high-quality protein sources. So, eat some other foods before or at the same time as eating protein powder. Patients can only eat liquid, and can add protein powder to milk, soybean milk, cereal, malt extract and other foods to eat together.

3. Eat warm or cold, not hot or hot. Whey protein powder contains many active substances with special physiological functions. They are all afraid of heat, and once heated, they will lose their activity, thus greatly reducing their biological potency. Therefore, whey protein powder must not be cooked or burned, but can only be dissolved (mixed) in water, porridge, malt extract and other foods below 40℃, and can also be eaten as a cold drink.

4. Add condiments to control. Protein powder can be added to various foods, such as sweet with sugar and salty with salt, but not too much. Because too much sugar and salt intake is not good for human health. Also, don't add monosodium glutamate to eat protein powder, because protein powder itself has a certain flavor, and the proportion of amino acids in whey protein powder is better, and monosodium glutamate is a component of monosodium glutamate, which decomposes glutamic acid after metabolism in the body. Adding monosodium glutamate to protein powder is tantamount to gilding the lily.

Children under three years old are not suitable for eating. The best nutrition for babies is breast milk. If children can't eat breast milk for various reasons, they should choose formula milk powder of the corresponding month or age instead of protein powder, because the protein component of the latter is not suitable for children, which is not conducive to children's digestion and absorption, and may cause vomiting, diarrhea or allergies after eating.

6. Don't eat with acidic drinks. Apple juice and other beverages contain organic acids, which will form clots when encountering protein powder, affecting digestion and absorption.

7. Special patients should consult a doctor before eating. Protein contained in protein powder is of high quality, which is decomposed by liver to synthesize human tissue components, and its metabolites are excreted from urine through kidney. Patients with serious diseases such as liver and kidney diseases may increase the burden on organs after eating protein powder. Therefore, consult a doctor before eating protein powder, and then decide whether you can eat it. If you want to increase the consumption of protein powder, you should also listen to the doctor's advice.