Why Are Proteins Important?

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The value of the proteins, fats and carbohydrates for the body
It is well established that the human body is composed of 19.6% of the protein, 14.7% - from fats, 1% - of carbohydrates and 4.9% - mineral substances. The remaining 59.8% are the water. Maintaining the normal life of the body depends on the ratio of essential nutrients, healthy diet requires the presence of proteins, fats and carbohydrates in a ratio of 1: 3: 5.
Proteins
Proteins are the main building material of our body, beside that they are also part of hormones, enzymes and antibodies. Thus, without their participation processes of growth, reproduction, digestion and immune defense are impossible.
Proteins responsible for inhibition and excitation in the cerebral cortex, the
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Total known 80 amino acids, but only 8 of them are considered essential, and if they are contained in a protein molecule, such a protein called complete, it’s main origin - animals, and it is contained in foods such as meat, fish, eggs and milk.
Vegetable proteins are incomplete; therefore, they are harder to digest because they have a shell of fiber, which hinders the action of digestive enzymes. On the other hand, the vegetable protein has potent anti-sclerotic effect.
To maintain the balance of the amino acids it is advisable to eat foods containing both animal and vegetable proteins, but the proportion of animal protein should be at least 55%.
Protein deficiency is expressed in weight loss, dry skin, reducing the secretory activity of the gastrointestinal tract. This significantly weakened function of the gonads, adrenal and thyroid glands, reduced immunity. Also, deficit of proteins could cause disorders of the central nervous system, in particular - reduced memory. In children, growth could be violated, primarily due to the deterioration of bone
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Carbohydrates.
Carbohydrates are a major source of energy, providing 58% of the demand of human body. Vegetable products contain carbohydrates in the form of mono-, di- and polysaccharides.
Monosaccharides - glucose, fructose and galactose - is simple carbohydrates, they are readily dissolved in water, it is important for the formation of glycogen in the liver, brain and muscle power, maintain a normal blood sugar level.
Disaccharides - sucrose, lactose and maltose – have a sweet taste, the body then split them into two molecules of monosaccharides.
Polysaccharides - starch, cellulose, glycogen are complex carbohydrates, unsweetened, insoluble in water. Gradually breaking into monosaccharides, these carbohydrates provide the energy saturation of the body, causing a feeling of fullness, almost without raising blood sugar.
It is very important to know that in case of the insufficient intake of carbohydrates in the body will take energy from fat stores, and even protein. This is the principle of gradual and safe weight loss. But an excess of carbohydrates leads to the high level of cholesterol, obesity, atherosclerosis and provokes

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