Total cholesterol of 5.7mmol/L belongs to the mildly high level, which may be caused by recent improper dietary habits, or hyperlipidemia and other reasons. 1. Improper diet: The normal value of total cholesterol should be maintained at 2.58~5.17mmol/L, and the normal range of different laboratories varies slightly. 5.7mmol/L belongs to the high level, which may be caused by excessive intake of cholesterol-containing foods recently, such as fatty meats, animal offal, butter, etc. For this situation, you can eat less high cholesterol foods and more cholesterol-containing foods. For this situation, you can eat less high cholesterol food and more fruits and vegetables to avoid the total cholesterol continues to rise. 2. Hyperlipidemia: When you suffer from hyperlipidemia, your total cholesterol will also be high. In addition to changing bad dietary habits, you can also follow the doctor’s instructions to use drugs to inhibit cholesterol synthesis, the common ones are atorvastatin, simvastatin and so on. It should be noted that it should be used with caution in patients with decompensated cirrhosis and abnormal liver function. Total cholesterol of 5.7mmol/L is on the high side and should be treated under medical supervision to avoid further deterioration.