Whether total cholesterol 6.23 mmol/L is serious or not depends on the patient’s actual condition. If the patient only has simple hypercholesterolemia without hypertension or coronary artery disease, this value is not considered serious. Because the normal cholesterol value should be 5.5mmol/L, 6.23mmol/L can only be considered mildly elevated and requires diet control and proper exercise to bring down the cholesterol to a better level. If the patient has high cholesterol along with diabetes, coronary heart disease should control the value of cholesterol to reach the standard range of 4.5mmol/L. At this time in should control the diet at the same time, control the blood sugar and blood pressure to avoid the generation of atherosclerosis. Further aggravate the formation of coronary heart disease, heart attack, brain infarction, etc.