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protein functions in our body

The primary function of the protein is to produce body tissue and synthesize enzymes, some hormones such as insulin, that regulate communication between organs and cells, and other complex substances, processes governing body .
animal and plant proteins are not used in the same way they are ingested, but digestive enzymes (proteases) must break them down into amino acids that contain nitrogen. Proteases break peptide bonds linking amino acids ingested so that they can be absorbed by the intestine to the blood and converted into specific tissue is needed.

is readily available animal protein or vegetable. Of the 20 amino acids that make proteins, 8 are considered essential ie: as the body can not synthesize them, ready to be taken through food. If these essential amino acids are not present at the same time and in specific proportions, the other amino acids, all or in part, not be used to build human proteins. Therefore, to maintain health and growth is very important to a diet containing essential amino acids. When there is a lack of any of them, the other amino acids are converted into energy producing compounds and their nitrogen is excreted. When you eat excess protein, which is common in countries with diets rich in meat, extra protein is broken down into energy producing compounds. Since proteins are scarce lot more than carbohydrates but also produce 4 calories per gram, eating meat in excess, when there is demand for reconstruction of tissues in the body, is an inefficient way of procuring energy. Animal-source foods contain complete proteins because they contain all essential amino acids. In most diets is recommended to combine animal protein with vegetable protein. It is estimated that 0.8 grams per kilo of weight is healthy daily dose for normal adults.

Many diseases and infections cause a continued loss of nitrogen in the body. This problem must be compensated by higher dietary protein intake. In addition, children also need more protein per kilogram of body weight. A protein deficiency accompanied by lack of energy gives rise to a form of protein-energy malnutrition known of marasmus, which is characterized by loss of body fat and muscle wear.