Total cholesterol of 6.8 mmol/L is a more serious condition. The normal reference range of total cholesterol is 2.85-5.69mmol/L. Once it exceeds this range, it is considered hypercholesterolemia. Hypercholesterolemia, like hypertension and diabetes, can cause a number of diseases if not detected and treated in time, and in serious cases, it can endanger the life and health of patients. Total cholesterol is the sum of cholesterol contained in lipoproteins in blood, including free cholesterol and cholesterol esters. Cholesterol can be derived from food or synthesized by auto-related enzymes, and is affected by age, gender, psychology, family genetics, occupation and other factors. The main clinical methods to reduce cholesterol levels are a combination of good lifestyle habits and medication, usually a light, low-salt, low-fat diet, less or no offal foods with high fat content, no smoking or alcohol, early to bed and early to rise, weight control, and active physical activity, as well as oral administration of statins, such as atorvastatin and resulvastatin, with attention to monitoring during medication administration.