What is the use of protein? Protein content of foods

Protein is one of the most important components of ourdiet. For many years, there has been controversy about the need for it in human life, but all experienced nutritionists come to a common opinion that without protein the body can not develop normally. This is the building material of our body, thanks to which the bone and muscle mass, cell walls are formed. Proteins are divided into animals and plant in accordance with their origin. The largest number of them is found in fish, meat, milk, eggs, nuts, soy and cereals. Without these products, a person can not get the necessary stock of substances in full. Especially valuable are the proteins of animal origin, which vegetarians refuse. They have that amino acid composition, which is poor in products of plant origin.

A special kind of protein is soy. It has phytoestrogens, like estrogen - a female sex hormone. The protein content in foods with soybean varies from 10 to 26 grams per 100 grams of total weight. That's why it is only useful in moderation. Soy can inhibit the work of the thyroid gland, also contributes to weight gain, leads to a slowing down of the thought process. Because of the large amount of it in the body, the skin condition worsens, constipation occurs and the menstrual cycle in girls is disrupted. In the worst cases this can lead to infertility. It is worth to carefully consider the selection of products containing soy.

Best if you usevegetable and animal proteins in equal numbers. In this case, nutrition will not only be balanced, but also healthy. If you are trying to lose weight, then the consumption of animal proteins should be reduced. The maintenance of calories in products of a phytogenesis is much more low, rather than in others.

The protein content of the products is due to the fact thatamino acids are present in it. Thanks to these amino acids, the body receives energy. There is no optimal for each protein intake rate. Everything depends on the person's way of life. On average, the daily norm does not exceed 0.8 g per kg of body weight, i.е. about 56 g for a man and 45 g for a woman. Children need more amino acids (up to 2 g per 1 kg), this is due to the fact that during the day they spend more energy than adults, and the body has not yet matured and bone, muscle mass develop.

If you are a vegetarianculture, despite the advice of professors and nutritionists, then your diet should be a particularly rich plant food. The lack of proteins of animal origin is not well tolerated by everyone, so make the most healthy diet, which will contain both cereals, nuts, legumes, and dairy products, relatively replacing meat and fish.

The protein content of food is difficultto calculate "by eye", so there are special tables that indicate the necessary data. In normal life, this table will be needed for those who are particularly careful in analyzing their diet or sitting on a strict diet. If you just want your diet to be healthy and full, then you can independently calculate the necessary amount of protein per day. It is not necessary to mention that for athletes the norm is much higher than for an average person, also if you are sedentary, then the percentage of protein, like the total number of calories per day, is also calculated below the average.

Vegetables do not have the full range of necessaryamino acids, therefore the protein content in products of plant origin is much lower. As a result, all vegetable diets lead to an imbalance in the body, deterioration of well-being and lethargy. We can receive a full complex of vitamins only in the event that we eat different types of proteins, combining them with a moderate amount of carbohydrates and fats.