What harm does high cholesterol have to human health? What symptom does the person with high cholesterol have?

Cholesterol is one of the important components of cells, which is distributed in various tissues of human body, especially brain tissue. When human skin is irradiated by ultraviolet rays in the sun, it can be converted into vitamin D, which is the raw material for human body to synthesize steroid hormones and promote fat emulsification. Cholesterol is also an indispensable nutrient for human body. When the cholesterol in the body is mainly low-density cholesterol, it will deposit on the artery wall, which will harden or block the artery, induce coronary heart disease and myocardial infarction, and even lead to death in severe cases. A long-term high-fat diet. High-fat diet, especially foods with high cholesterol, such as animal brain, liver, kidney and egg yolk. , will lead to an increase in cholesterol in blood and bile, easy to produce gallstones.

Long-term high-fat diet is easy to make people obese, and bad exercise leads to decreased gallbladder muscle tension, delayed gallbladder emptying, cholestasis and stone formation. The metabolism of cholesterol in human body mainly depends on the liver. Nutritionists believe that when it combines with saturated fatty acids to form low-density lipoprotein, it is easy to deposit and attach to the arterial wall, which will increase the cholesterol content in blood, promote arteriosclerosis, cause arterial blockage and induce cardiovascular diseases.

When cholesterol and unsaturated fatty acids combine to form high-density lipoprotein, lipoprotein is easy to emulsify and metabolize because of its low melting point, and will not be deposited on the blood vessel wall. It can also remove cholesterol deposited on the blood vessel wall and reduce the cholesterol content in the blood. Low-density cholesterol, which is harmful to human body, can cause cardiovascular diseases. Nutritional research has proved that blood cholesterol content is not directly related to dietary cholesterol intake, but is directly proportional to dietary saturated fatty acid intake and inversely proportional to dietary unsaturated fatty acid intake.

To reduce the cholesterol content in blood, it is suggested to eat more unsaturated fatty acids that are beneficial to human body, such as soybean oil, rapeseed oil, linseed oil, safflower seed oil, sesame oil and fish oil rich in linoleic acid and linolenic acid, and eat less animal oil and animal offal containing high saturated fatty acids. For middle-aged and elderly people or patients with coronary heart disease, it is recommended to eat foods rich in -3 unsaturated fatty acids, such as eggs rich in-linolenic acid, fish oil and linolenic acid capsules. For children and adolescents, it is recommended to eat eggs and fish oil rich in DHA every day, which is good for health and improves memory.