The normal range of LDL cholesterol is 2.07-3.37mmol/L. When LDL cholesterol 4.6mmol/L is present, it is severely elevated, but whether the situation is serious or not should be combined with the presence of other high-risk factors in the person being examined. If a patient has cardiovascular disease, diabetes, etc., and LDL cholesterol 4.6mmol/L is present, it should be taken seriously, as it is prone to atherosclerotic cardiovascular disease at this time. The higher the LDL cholesterol rises, the greater the impact on the body, and the more likely it is to cause plaque formation, leading to coronary heart disease, stroke and peripheral artery disease and other serious diseases. However, the condition may also be caused by diet, and you should consult your doctor or take further tests to decide whether to take medication. Therefore, when LDL cholesterol 4.6 mmol/L is present, you should seek medical attention promptly and conduct a comprehensive analysis after completing relevant tests to determine whether it is a serious symptom. Treatment is usually actively controlled by lipid-lowering drugs and other drugs, and patients with cardiovascular disease are recommended to control LDL cholesterol below 3.4 mmol/L, and high-risk patients should drop to 2.6 mmol/L or even below 1.8 mmol/L. In daily life, a low-fat diet, appropriate exercise, and regular review of lipids should be performed.