Total cholesterol of 6.69mmol/L is considered serious and needs to be taken seriously. Clinically, the ideal range of total cholesterol is <5.20mmol/L, and between 5.23 and 5.69mmol/L is borderline elevated. Therefore, total cholesterol of 6.69 mmol/L exceeds the normal range and is more serious. Patients need to be alerted that it is caused by hypercholesterolemia, diabetes mellitus, nephrotic syndrome, obstructive jaundice, and hepatocellular carcinoma. At the same time, total cholesterol 6.69mmol / L people also need to be alert to the risk of atherosclerosis, coronary heart disease, stroke and other diseases. For those with total cholesterol 6.69mmol/L, further detailed examination should be carried out in order to clarify the disease and then follow the doctor's instructions for treatment, so as to promote the total cholesterol to return to the normal level. In general, the prognosis of people with total cholesterol of 6.69mmol/L is good if the cause of the disease is clarified and the patient is treated aggressively. If not treated actively, it will lead to further aggravation of the disease, which is not conducive to the health of the body.