The main nutritive ingredients in our food are: proteins, vitamins, mineral substances, cellulose and carbohydrate.
Health person's body, who has no overweight consist of proteins in 17 percents( water in 40%).
Protein is in muscles, skin, bones and cartilages. It is even in heart, kidneys, brain and liver. We can call proteins - lumbers of our organism.
Poteins which are in our food are decomposed on amino acids during the digestion.
After this our organism can use amino acids for specified aims. Some of them will be used for growth, second part will be used for regenerate the tissues or for produce the hormones.
Proteins are in red and white meat, in fishes, eggs and in different milk - products and nuts.
Human belongs to animals world so it is obvious that he better assimilates proteins from eggs, milk or meat than from vegetables.
That is why very important is to introduce in vegeterian diet a lot of soya bean, nuts and wheaten flour. Good diet should contain 15-20% protein-food. Children need about 100 grams but grown-up woman needs just 30 grams.