If total cholesterol is simply elevated, it is hypercholesterolemia, which is also classified as hyperlipidemia. According to the Chinese Guidelines for Prevention and Control of Dyslipidemia in Adults (2017 edition), the diagnostic criteria for hyperlipidemia are: 1. serum TG : more than 1.70 mmol/L; 2. serum TC : more than 5.18 mmol/L. 3. serum HDL-C : less than 1.0 mmol/L; 4. serum LDL-C : more than 3.4 mmol/L. Total cholesterol is the sum of cholesterol contained in all lipoproteins in the blood, which is divided into endogenous and exogenous. Endogenous total cholesterol is synthesized by the body itself; exogenous total cholesterol mainly comes from animal foods such as offal, egg yolk, cream and meat. Numerous studies at home and abroad have shown that elevated total cholesterol is closely related to atherosclerotic diseases. If you have elevated total cholesterol, you need to go to the hospital to be evaluated by a doctor and a lipid-lowering program should be formulated.