Aspect 1: There are two reasons for low cholesterol. The first is secondary hypocholesterolemia, which is more common in hyperthyroidism and liver damage such as hepatitis and cirrhosis. The other type is primary hypocholesterolemia, which is mostly caused by an unbalanced diet, long-term vegetarian diet, partial eclipse, and low cholesterol intake.

Second aspect: There are many reasons for high total cholesterol. Most of them are due to abnormal liver function after damage to liver cells, and the excretion of bile is blocked, resulting in increased total cholesterol. Elevated total cholesterol is usually seen in patients with hepatitis. When liver cells are severely damaged, such as cirrhosis or severe hepatitis, it will lead to an increase in total cholesterol in the blood.

The third aspect: some non-pathological factors, such as malnutrition, anemia, intake of drugs containing vitamin C, heparin, kanamycin, etc.; long-term high-fat diet, high-calorie diet and genetic factors, Lack of exercise, mental work, mental stress, etc. can also cause changes in total cholesterol levels.