Protein is the most important substance in human body, and it is also one of the most abundant substances. 20% of the adult body is made up of protein. Protein is indispensable to the human body, second only to the need for water.
Protein is the main source of human nitrogen, which can not only provide some consumed energy, but also be used to synthesize new tissues. Protein accounts for about 17% of the adult's body weight, and 3% of protein participates in metabolic renewal every day. Babies, teenagers, pregnant women and lactating women should not only maintain the protein renewal of tissues, but also synthesize new tissues. When protein in the body is insufficient, people's basic life activities will be affected, which may lead to growth retardation, underweight and mental retardation of children and adolescents. Adults have fatigue, weight loss, anemia, decreased plasma albumin, and even edema; It can also lead to menstrual disorders in women. Eating protein powder can effectively prevent or improve these symptoms.
prevent disease
Heart disease is the main cause of death in western developed countries. High plasma cholesterol is the main cause of heart disease. Animal fat in the diet will increase the content of plasma cholesterol, which is an important factor leading to arteriosclerosis and heart disease. Excessive saturated fatty acids, cholesterol and blood cholesterol are directly related to heart disease. Lowering plasma cholesterol will reduce the risk of heart disease. During the period of 1982, scientists from many countries used soybean protein instead of animal protein to treat patients with high cholesterol. The results showed that the content of total cholesterol in plasma decreased by 20% when 50 grams of soybean protein was ingested every day. This study proves that soybean protein can reduce the adverse effects of blood lipid and cholesterol on the heart of patients with high cholesterol.
In the United States, doctors advise heart patients to eat soy protein before taking cholesterol-lowering drugs. Because soybean protein is neither medicine (no toxic side effects) nor cheap, it can effectively prevent heart disease and has no side effects.
Relieve the burden on the kidneys
Nephropathy is a common long-term complication of diabetes, and more than 20% of diabetic patients have impaired renal function. The intake of animal protein will increase the burden on the kidneys, which will lead to the aggravation of diseases. Soybean protein can prevent and reduce the damage of animal protein to kidney by reducing plasma cholesterol content. Through the observation of diet therapy for patients with kidney disease, it is found that soybean protein is the best substitute for animal protein, and patients with kidney disease are also willing to accept food containing soybean protein.
Provide nutrition for muscle growth
Protein powder in bodybuilding mainly refers to whey protein powder, and protein in our daily food is mostly casein. Protein powder can be said to be a kind of nutrition for muscle growth. If you don't have enough training, it is useless to just eat protein powder.
The main functions are:
Repair cells and construct tissues;
All cells and tissues that make up the body;
Maintain the normal function and metabolism of cells;
Form an enzyme system to maintain normal digestive function;
Make the transport substance of blood and maintain the osmotic pressure of the body;
The main components of collagen;
Participate in the seven functions of the human body;
Catalysis of enzyme;
Regulation of hormones;
The carrying function of oxygen;
Muscle contraction;
Immune function of the body;
The supporting function of the body;
Regulating immunity and anti-fatigue;
Neutralize body fluids;
Heat supply: one gram of protein can generate 4,000 calories, one spoonful of whole protein powder is equal to one cup of milk or one egg or one or two pieces of meat with protein, and the cholesterol of eggs is only 1/25 of that of eggs.
Nutritional value of protein powder
Participate in the composition and metabolism of the body.
Protein is an important nutrient, and its existence is closely related to various activities of life, such as participating in the composition and metabolism of the body, participating in the composition and metabolism of genetic information, and providing heat for the body.
Can be digested, absorbed and utilized by the human body to varying degrees.
There are many kinds of protein, and protein from different food sources can be digested, absorbed and utilized by the human body to varying degrees. In other words, the nutritional value of different kinds of protein is different, and the main factor that determines the nutritional value of protein is the type and content of essential amino acids in protein. Amino acid score is a common index to evaluate the types and contents of essential amino acids in protein.
Healthy people do not need to eat protein powder.
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. During the growth and development of children and adolescents, pregnant women or lactating women generally have a high demand for protein.
Protein powder adapts to the crowd
People who want to eat high-quality plant protein in a healthier way besides high-fat protein;
In the daily diet, people who have insufficient intake of protein foods such as milk, meat and cheese;
Protein needs to be supplemented, such as children, teenagers, the elderly, pregnant women, lactating women and postoperative patients. ;
Vegetarian;
People who want to be muscular and more fit certainly need whole protein supplement;
Sports bodybuilders will consume a lot of protein in high-intensity training every day;
Sports bodybuilders often have muscle injuries and need protein to repair them.
Side effects of protein powder
Excessive intake of protein is not only a waste, but also harmful to human health, because the accumulation of decomposition products of protein in the body will affect normal liver and kidney function and low immunity, and excessive intake of animal protein will also induce heart disease. In addition, excessive intake of protein will increase the risk of cancer.