According to the statistical data of the fourth national nutrition survey in 2002, the average protein intake of urban residents is 75.1g and 69.1g respectively, while the recommended daily dietary nutrient supply is 80g, which is basically close. In recent years, residents have paid more attention to dietary nutrition. It is certain that the protein intake of urban residents in China is not lacking, and there is no need for healthy people to supplement protein powder.
So, do sub-health people need to supplement protein powder? There is a saying that the body of sub-health people has problems and needs to be supplemented with protein powder to improve the body’s immunity. This argument can not stand scrutiny. First of all, we should clarify whether “sub-health” is caused by protein deficiency. If it is not caused by protein deficiency, but by the lack of other nutrients, supplementing protein powder will aggravate the consumption of nutrients that are already lacking, which is not conducive to alleviating the sub-health condition.
Another view is that the protein in the food contains incomplete essential amino acids for human body, while the amino acids in the protein powder are complete. Supplementing the protein powder can make up for the deficiency of diet and enable the human body to absorb more comprehensive essential amino acids for human body. This argument is equally untenable. If a person’s intake of amino acids is unbalanced, after adding protein powder, the insufficient may be supplemented, but the excess will be more, which will easily put the body into a state of “high protein load”. The amino acids in excess protein need to be deamination in the liver, and the treated amino acids will produce toxic ammonia. The liver also needs to detoxify these ammonia, convert them into non-toxic urea, and then transport the urea to the kidney for excretion. If there are problems in the above links, it may lead to an increase in blood ammonia, which will enter the brain with the blood, and then cause brain tissue dysfunction, which is the so-called “protein poisoning”.
In fact, natural food is the best source of high-quality protein. In daily life, the principle of “food diversity” should be emphasized. After different kinds of proteins are mixed in the body, they will learn from each other’s strong points in amino acid composition and improve their nutritional value. This is the “protein complementarity” in nutrition. For example, when natural foods such as wheat, rice and peas are eaten alone, the protein utilization rate is not high. After mixed consumption, the protein utilization rate is close to the high-quality protein of poultry and animal meat.
In addition, protein intake varies according to people’s age, weight and labor intensity. In the case of rich and diverse foods, it can completely meet the needs of different human bodies for protein, and there is no need to supplement protein powder. Moreover, the psychological enjoyment and sensory stimulation brought by food can not be replaced by protein powder.
five kinds of people need protein powder
Flour is not without merit. Its appearance is a kind of progress and a blessing to those who need it. What kind of talents need to supplement protein powder?
People who want to take in a large amount of protein, such as patients who are injured or recovering after surgery;
People who need additional protein supplement, such as some athletes, vegetarians, elderly people with functional decline, dieters, pregnant women and lactating women;
People with low digestive function, or people with gastrointestinal diseases that make it difficult to digest and absorb ordinary food, such as patients with partial gastrectomy;
Weak, malnourished, immunocompromised, anemia patients;
Those who fail to have enough milk, meat, beans, eggs or other high protein foods in their daily diet.
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