Hyperlipidemia is closely related to coronary heart disease and cerebrovascular disease and has attracted attention. Modern people are paying more and more attention to health care, and many of them are very careful to keep fit and become vegetarians. So, do these thin people and vegetarians not need to worry about lipid problems? The answer is no. First of all, being skinny only means that his body fat content is lower than that of a fat person, it does not mean that he has the same low blood lipid level. In other words, fat is not the same as blood lipids. Lipids are the lipids in the blood plasma, including neutral fats (triglycerides and cholesterol) and lipids-like, not the fatty tissue of the body. Hyperlipidemia usually refers to elevated plasma cholesterol and/or triglycerides. Although the prevalence of hyperlipidemia is much higher in fat people, it does not mean that the blood lipids are necessarily normal in lean people. There are two ways in which lipids are produced. One is an exogenous source eaten through the diet, and the other is an endogenous source synthesized by the body itself. Most of the high-fat food we eat is digested and absorbed to form celiac particles, and a small percentage of cholesterol forms very low-density lipoproteins that enter the body’s circulation. While endogenous cholesterol and triglycerides are mainly synthesized in the liver and small intestine, triglycerides form lipoproteins and enter the blood. Hyperlipidemia can occur in both fat and lean people if the liver’s function of converting fats as well as consuming them is abnormal. Generally people with excessive triglyceride intake will be more obese. The first factor that affects blood lipids, excluding genetic factors, is age. Young people have a strong metabolism and a lower incidence of hyperlipidemia, while older people have a lower metabolic level and less energy consumption, so they are prone to hyperlipidemia. Another reason is the diet structure, like meat, exercise and less, it is easy to occur hyperlipidemia. A part of thin people, have hypothyroidism, diabetes, liver and kidney disease, etc., these will affect their blood lipid metabolism, can also cause the occurrence of hyperlipidemia. And vegetarian diet is absolutely healthy? Nowadays, many businesses are offering so-called “nutritious vegetarian food”, although there is no meat. But in order to keep the food delicious, often use more cooking oil, and some soybean products are taken deep-fried, fried cooking method, a food will have more fat intake. So vegetarian people with hyperlipidemia also need to pay attention to the amount of fat intake. Food intake has an impact on blood lipids, but one’s own lipid metabolism is also important, so even if one is a vegetarian, high blood lipids are also dangerous, and if they are accompanied by cardiovascular disease, they need to be treated with lipid-lowering medication. Therefore, fat and thin do not determine the level of blood lipids, and thin does not guarantee normal blood lipids. We recommend that middle-aged and elderly people must have regular blood lipid checkups. Once abnormalities are detected, in addition to regulating life and diet, long-term medication is needed if necessary.