Blood vessels are the highways of our body, and their smoothness determines the health of our body. This is because only a smooth blood flow channel can ensure that the blood delivers the body’s nutrients to the designated organs and carries away the metabolites from the body. If blood vessels are blocked, the areas under their control are bound to become dysfunctional. Modern medicine has come to view the blood vessel as a separate organ in the body. Endothelial cells have endocrine function, which can secrete vasodilators (nitric oxide) and vasoconstrictors (endothelin), the former has strong vasodilating effect, while the latter can strongly constrict blood vessels, the balance between these two determines whether the vascular pathway is open or blocked. In addition, blood vessels are subject to external factors that cause them to dilate or contract, directly or indirectly affecting the function of the body’s organs. As the human body ages, the endothelial cells of blood vessels are subjected to various risk factors such as high blood lipids, high blood pressure, smoking, diabetes, obesity, etc. The endothelium of blood vessels will be damaged and atherosclerotic plaques will appear, making the blood vessels become narrow or blocked and causing various serious and dangerous vascular pathologies. For example, coronary heart disease is a heart disease caused by coronary artery atherosclerosis resulting in myocardial ischemia and hypoxia, and cerebral infarction is an ischemic cerebrovascular disease caused by atherosclerosis of cerebral blood vessels, which share the common feature of damaged vascular health and atherosclerosis. How to protect blood vessels has become a hot topic in medicine. I personally think that “keep your mouth shut and your legs open” is the prescribed action to protect blood vessels. The so-called “good mouth” is to learn to eat foods that are good for blood vessels, such as hawthorn, oats, black fungus, kumquat, eggplant, garlic, onion, these ingredients are good for unblocking blood vessels and maintaining the elasticity of blood vessels. There are also studies that vinegar can soften blood vessels and lower blood lipids, so you can drink some in small amounts every day. Green tea is considered to be the healthiest health food for human blood vessels, and its component catechol can reduce the content of bad cholesterol in the blood and increase the content of good cholesterol, so it also has a very good protective effect on blood vessels. Some experts also believe that a small glass of red wine every night helps to maintain the flexibility of blood vessels and prevent hardening of the blood vessels. The other side of the mouth is to control the intake of foods that are damaging to the blood vessels, such as salt, high sugar, heavy drinking and smoking, these components can lead to more and more fat gathering in the blood vessels, causing them to clog. “Move your legs”, in fact, is to encourage more exercise. Exercise can make more capillaries open throughout the body, promoting blood microcirculation and accelerating the removal of waste from the body. If you do not move for a long time, the garbage in the blood vessels will gradually gather and form plaques, the latter is a time bomb, once the explosion rupture will cause blood clots and vascular obstruction. Middle-aged and elderly patients should have regular comprehensive examinations of their highways to rule out any angiomatous malformations, stenoses and other lesions. In addition, older people need to take some blood vessel protection drugs, such as aspirin and lipid-lowering drugs.