Physicians reveal a correlation of excess consumption of fats with the development of atherosclerosis. Saturated fatty acids play the main negative role, which violate the liver function. In a large number of these acids enter the body through consumption of fatty meat, sausages other high-caloric products of animal origin, which you put into your regimen of eating.
  Polyunsaturated fatty acids have anti-sclerotic properties. They convert cholesterol into soluble compounds and facilitate to remove cholesterol from the body. These acids contain 10-15 times more in vegetable oils than in animal fats. Vegetable oil contains less calories then butter, for example. So, nutritionists approve using vegetable oils. Only the joint consumption of animal fat and vegetable oil provides good nutrition. Solid fats are main danger to the human body and doctors recommend to add vegetable oil about 0.11 – 0.15 lb a dish per day, because it contributes the most full and active destruction of solid fat and thereby prevent the accumulation of fat in the body. So, the vegetable oil is important part of your regimen of eating. And there is another council, approved by doctors: exclude fried meat, fried vegetables from your diet. It is better to prepare them with steam or cook.