Sugar or carbohydrate is one of the three indispensable thermogenic nutrients for human body, and 50% of the calories needed by human body are provided by sugar food. Our people take rice and flour as staple food, which contains a lot of starch, which is the main source of carbohydrate nutrients for human body. After digestion, these starches can be converted into glucose needed by human body. In terms of quantity, the sugar intake through three meals a day is enough for human metabolism, or it has exceeded the needs of the human body. At this time, if sucrose is added to the diet, or sweets, fruit candy, chocolate, etc. If you use it too much outside meals, you will consume too much sugar, and the liver will synthesize too much lipid, resulting in fat accumulation and elevated blood lipids in the body, which will further cause atherosclerosis and cardiovascular and cerebrovascular diseases. It is believed that if sucrose and fructose are eaten too much, they will soon become pyruvate in the liver, and then further become triglycerides (TG) and cholesterol (TC), which are transported into the blood by low-density lipoprotein (LDL), so blood lipids will increase. Furthermore, because of the decline of pancreatic function, the glucose tolerance of the elderly is reduced. Eating too much sugar will cause disorder of glucose metabolism, increase blood sugar, induce or aggravate diabetes, further aggravate disorder of lipid metabolism, and accelerate the formation of atherosclerosis and coronary heart disease. When studying the relationship between sugar intake and cardiovascular and cerebrovascular diseases, Swiss scientists found that the incidence and mortality of cardiovascular and cerebrovascular diseases were positively correlated with sugar intake. Through investigation, Japanese scholars have also reached the same opinion as above. Therefore, some scholars even pointed out that eating too much sugar is no less harmful to the body than smoking seriously, so they called sugar a sweet and white "poison".

To sum up, in order to prevent the occurrence and development of atherosclerosis and cardiovascular and cerebrovascular diseases, patients with hyperlipidemia, especially elderly patients, should avoid using sweets and various sugars in addition to regular meals.