It is reported that excessive intake of protein is 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 will not only increase the burden on the liver, but also easily cause indigestion, which will affect the function of liver and kidney for a long time, leading 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. Patients with gout and liver and kidney failure should also limit the intake of protein.
Extended data:
Protein powder does not need to be supplemented.
In the Reference Intake of Dietary Nutrients for China Residents, it is recommended that the daily protein intake of adults should be 65 ~ 90g, or 10% ~ 12% of total energy, which can meet the metabolic needs. In addition, protein intake varies with people's age, weight and labor intensity.
"protein is the most important nutrient for human body. It is not only the main component of the human body, but also can be converted into sugar and fat and provide energy under certain conditions. " Wang Xingguo said, "The best food sources in protein are fish, meat, eggs, milk, soybeans and nuts."
"protein in food has a large molecular weight and needs to be digested into small molecular amino acids in the small intestine before it can be absorbed into the blood and absorbed by the human body." Wang Xingguo explained, "So all protein entering the gastrointestinal tract, whether it is protein in meat, eggs and milk, or so-called health products such as protein powder (including soybean protein powder and whey protein powder), collagen, immune protein (bovine colostrum) and sea cucumber, will be digested into small molecular amino acids. Once protein is digested into amino acids, it will lose all its original activities and functions and become an out-and-out' dead substance'. "
Therefore, as long as people are healthy, eat a normal diet, eat a normal amount, and are not picky eaters, they can get enough protein from natural foods, eat real food as much as possible, and don't have to eat extra protein powder.
In addition, experts say that protein powder drinks usually contain a lot of synthetic vitamins and minerals, as well as non-adhesive substances to help the body digest these "fake foods".
Some experts suggest that people must check the instructions on the back of protein powder drinks. It is very important to know the ingredients of drinks, not just the contents of fat and sugar. There are more and more synthetic pigments, flavors and additives in protein powder.
References:
The harm of protein powder-People's Network