And that they have a negative effect on dieting and sporting achievements. In the last few years, the media helped to establish a more realistic view on fats, but the awareness of an average consumer is still far from perfect. Fats give energy to our bodies, since they have high calorific value (9kcal/gram).
Fats in Our Diets
They also affect the levels of positive cholesterol in the blood system. They may be stored and used when our body requires energy. They work together in forming nerve tissue, in producing hormones, they are vital for the production of bile salts, they transfer vitamins (A, E, D, K), they are a source of essential fatty acids: the linoleic an linolenic acids; and some fatty acids play an important role in preventing cardiovascular diseases.
Even if we consume large amounts of fat, the body may still lack the so-called essential fatty acids.
The body is not able to synthesize them on its own; therefore they should be introduced with food. We are speaking of linoleic acid, which is the basis for the formation of omega-6 fatty acids (pumpkin, sunflower, sesame oil, etc.), and linolenic acid, which is the basis for the formation of omega-3 fatty acids (flaxseed, fish oil).
Both acids are the basis for the formation of long chain polyunsaturated fatty acids.