Protein
Protein molecules are made of combinations of amino acids. Their various combinations give special properties to molecules. Proteins are required for metabolic reactions and they construct "skeleton" of cells and the body's various tissues - muscles, skin, nerve fibers. Protein molecules are necessary for the regeneration processes. In the process of digestion protein food is broken down into its constituent amino acids. When they get to the tissue, the desired molecules are created. For the correct weight loss, it is important to eat a …show more content…
Lipids - fats and fat-like substances - are parts of the cell. They affect the permeability of cell membranes and they involved in the transmission of nerve impulses, the contraction of muscle fibers. Lipids provide human body with energy reserves, and they are a part of the water-repellent, insulating covers.
In the case of deficit of lipids it is impossible to create new cells. There are the following varieties: Triglycerides are a part of cell membranes, they store energy reserve in fat cells.
Phospholipids are a part of the nervous tissue cell membranes. They transport fats, fatty acids and cholesterol.
Sterol is cholesterol contained in the cell membrane, excludes the influence of temperature on their stability. It is needed to produce vitamin D, production of male and female sex hormones, brain needs and immune system.
Fats are characterized by high calorific value, and therefore they are not consumed in large amounts. Especially the need for them is not very high. Their deficit and surplus are equally harmful. The prevalence of food rich in saturated fast, increases the body weight and the level of "bad" cholesterol. It deposits on the vessel walls cause atherosclerosis, heart disease,