Fat is a source of energy. Fats play the role of a number of other useful features.
They protect against the cold and allow the transport of vitamin A, D, E and K. They are needed for the production of various enzymes and hormones and are the key to many metabolic processes. They also support the immune system and allow the proper operation of the brain.
The only problem with them is to choose the right, healthy fats. Animal products, especially butter, fatty meat and dairy products, contain mainly saturated fats, which have a bad effect on the body.
On the other hand unsaturated fats protect us against diseases and they are mainly provide found in fatty fish of the sea. The more fat, the better! Good fats are also in olive oil, canola oil, nuts.
Remember, do not overdo their consumption because all fats, both good and bad, are calories. Therefore, in a healthy adult fat should not be higher than 30 percent. Daily doses of energy, including fats of animal origin, should be only 6-7 percent and this is due to the fact that fats are the most calorie nutrient (1 g fat = 9 kcal).