Saturated fatty acids and unsaturated fatty acids Generally speaking, unsaturated fatty acids are more beneficial to human body. Saturated fatty acids mainly come from animal fats and dairy products, such as lard, butter, butter and so on. Unsaturated fatty acids mainly come from vegetable oils, such as linseed oil, olive oil and corn oil.

Saturated fat is also a nutrient that the human body needs, but the demand of the human body is not much. Unsaturated fatty acid is a kind of fatty acid that constitutes human body fat and is an essential fatty acid for human body. Unsaturated fatty acids can maintain the relative fluidity of cell membrane and ensure the normal physiological function of cells.

Esterification of cholesterol reduces cholesterol and triglycerides in blood. The synthesis of linoleic acid and linolenic acid can reduce blood viscosity and improve blood microcirculation. Unsaturated fatty acid intake can not be excessive, which will lead to obesity and elevated blood lipids.