Smoking is a major cause of thrombosis and can lead to a variety of thrombotic diseases. In addition to sedentary lifestyle and carotid artery stenosis, smoking is also an important cause of thrombosis. Long-term heavy smoking may induce a variety of thrombotic diseases, such as ischemic heart disease, ischemic cerebrovascular disease, atherosclerotic occlusive disease, etc. According to a large number of epidemiological surveys at home and abroad, the number of patients with thrombotic diseases who have a history of smoking is as high as 65%-95%, and quitting smoking can reduce the disease, but smoking again will aggravate the disease. Therefore, quitting smoking is one of the measures to prevent thrombotic diseases. Preventing thrombosis has three tricks: 1, drink a glass of plain water in the morning. Healthy people generate two substances in the body, one is coagulation substances such as prothrombin, fibrinogen and calcium ions, which can promote platelet coagulation into a clot, forming a thrombus and playing a hemostatic role. The other is anticoagulant substances, such as fibrinolytic enzyme and antithrombin III, protein C, protein S, etc., which have the effect of anticoagulation and prevention of thrombus formation. Normally, the coagulation and anticoagulation substances in human blood are in a dynamic balance, which is not easy to form thrombus, but also has a hemostatic effect to keep the human body in a healthy state. How can we prevent the occurrence of blood clots? Older people drink a glass of plain water after waking up in the morning, which can reduce the blood viscosity to prevent thrombosis, and usually also to develop good drinking habits, drinking 1000-2000 ml of water daily can reduce the blood viscosity, which is good for preventing thrombosis. “Many older men have difficulty urinating due to prostate enlargement, fear of going to the toilet, and drink very little water every day, which actually tends to lead to a rise in blood viscosity and the formation of blood clots.” 2, proper exercise for a walk In addition, proper sports are essential. Appropriate sports can promote blood circulation, make blood dilution, viscosity decline. Like doing gymnastics, playing tai chi, dancing elderly disco, cycling, walking, jogging, swimming, sword dancing, etc., are good sports choices. If some elderly people are not convenient to move or need to be bedridden, family members can help move wrists and ankles, it is also possible. In addition, elderly people with hypertension, hyperglycemia, hyperlipidemia and other diseases must follow medical advice to take medication on time and check the indicators regularly, because elderly people with these risk factors are more likely to have blood clots. 3, vitamin-rich foods should be eaten Many foods are beneficial to the prevention of thrombosis, and their proportion in the composition of the diet should be promoted. Such foods include corn oil, peanut oil, soybean oil, vegetable oil, fish oil, onion, garlic, mushroom, mushroom, black fungus, silver fungus, purple cabbage, kelp, oats, konjac, bean food, walnuts, peanuts. Almonds, melon seeds, sesame seeds and hawthorn, etc. Vegetables, fruits and standard processed cereals provide a high level of vitamins in the diet, and all types of vitamins, especially vitamin B, vitamin C and vitamin K, are beneficial in preventing blood clots.