A cholesterol level of 6.7mmol/L can be reduced to a desirable value through lifestyle intervention without risk factors such as high blood pressure. The normal reference value for cholesterol is less than 5.2mmol/L, and if it exceeds 6.2mmol/L, it is considered a dangerous level. Therefore, a total cholesterol level of 6.7mmol/L is relatively serious. In this case, lifestyle interventions are usually carried out first, including dietary avoidance of grease and high salt, cessation of smoking and alcohol consumption, and maintenance of appropriate frequency and intensity of aerobic exercise. If the above measures are effective and the patient does not have risk factors such as hypertension, diabetes, coronary heart disease, etc., there is no need to take medication for lipid lowering. If lifestyle interventions are ineffective, or if the patient has risk factors, medication is needed to control cholesterol. Statins such as atorvastatin, ezetimibe, colesevelam, etc. are usually prescribed by a doctor. It is recommended that you seek medical attention if necessary. The treatment should be standardized under the guidance of a doctor.