Very high total cholesterol may be associated with genetic factors, poor lifestyle, endogenous abnormalities of lipid metabolism, and secondary cholesterol increases. High total cholesterol may be associated with familial hereditary hypercholesterolemia. Secondly, it may be related to poor lifestyle. Frequent staying up late, excessive mental stress, smoking and drinking, frequent consumption of high-fat and high-calorie foods, and long-term lack of exercise may lead to elevated total cholesterol. Elevated total cholesterol may be associated with abnormal lipid metabolism in the body, and abnormal endogenous lipid metabolism may also lead to high total cholesterol. Secondary diseases such as nephrotic syndrome may also lead to elevated total cholesterol. When total cholesterol is significantly elevated, it is important to seek prompt medical attention and reasonable treatment under the guidance of a doctor.