Fat is an oily substance, and protein, sugar together called the three basic nutrients of the human body, mainly in the human body subcutaneous tissue, is the most important, the most direct energy supply material, its sources mainly include the following aspects: 1, direct absorption: daily intake of food contains a large number of fat, through the body’s digestion of various enzymes through the intestinal blood microcirculation absorption into the body. 2, in vivo transformation: the body absorbed sugar, protein and other substances, in addition to supply the body’s normal life activities, excess nutrients will be converted into endogenous lipids in the body, and gradually gathered in the abdomen and other parts, eventually leading to the emergence of obesity. If the body absorbs too much lipids for a long time, it is easy to increase the incidence of diabetes, coronary atherosclerosis, cardiovascular and cerebrovascular diseases, fatty liver and other diseases. It is recommended to control the intake of fat in the daily diet, especially the intake of animal fat, and to actively engage in moderate physical exercise to increase the consumption of fat in the body. If you have abnormal cholesterol or triglycerides, in addition to strict dietary control, it is recommended that you seek medical advice and take lipid-lowering drugs under the guidance of a doctor.