Is smoking harmful to heart patients?

Smoking and cardiovascular and cerebrovascular diseases According to statistics, cardiovascular and cerebrovascular diseases have become the number one killer of human health. In China, the mortality caused by smoking is close to 50% of the total mortality, and smoking is one of the four major culprits of cardiovascular and cerebrovascular diseases (hypertension, hyperlipidemia, smoking and diabetes). Smoking can cause hypoxic injury of vascular endothelium, activate coagulation factors, enhance platelet aggregation, cause proliferation of vascular smooth muscle cells, and increase vascular tension, all of which contribute to the occurrence and development of atherosclerosis and thrombosis. Studies have shown that the incidence and mortality of atherosclerosis increase by 2-6 times between smokers and non-smokers (depending on the amount of smoking), and atherosclerosis is the basis of cardiovascular and cerebrovascular diseases such as coronary heart disease and stroke. The research shows that the harm of smoking to acute myocardial infarction is directly proportional to the square of the total amount of smoking, and the harm increases by 4 times every time the total amount of smoking increases 1 time. In fact, young men are less likely to suffer from myocardial infarction, and most of them are closely related to smoking. The average life expectancy of lifelong smokers will be shortened by about 10 years.

Smoking and malignant tumor: As we all know, the relationship between lung cancer and smoking is "dear". Smoke contains many toxic chemicals, such as lead, benzopyrene, tar, nicotine and carbon monoxide. Long-term stimulation of smoke will cause serious damage to mucosa, and then induce lung cancer. Scientists have found that smokers who smoke more than 20 cigarettes a day are 7- 13 times more likely to develop lung cancer than non-smokers, and the risk is increasing with the increase of smoking age and quantity. In addition to lung cancer, heavy smoking will also cause a large number of malignant tumors such as bladder cancer, laryngeal cancer, oral cancer, esophageal cancer and pancreatic cancer.

Smoking is closely related to other vascular diseases, such as peripheral arterial occlusive atherosclerosis, Raynaud's syndrome, male impotence and so on, and can also cause thromboangiitis obliterans. In addition, the damage of smoking to the kidney can not be ignored, especially when patients with hypertension and diabetes are more likely to cause renal failure.

Smoking and respiratory diseases are closely related to chronic bronchitis. Smoking can damage bronchial mucosa and ciliated epithelium, and induce bronchospasm and bacterial infection. The further development of the disease will lead to obstructive emphysema and pulmonary heart disease, which will be life-threatening.

Other smoking is harmful to pregnant women and fetuses, which not only causes fetal growth retardation and underweight, but also causes fetal birth defects, premature delivery and abortion. In addition, smoking can also cause bile reflux gastritis, increase the incidence of peptic ulcer, affect ulcer healing, promote ulcer recurrence and increase the occurrence of complications.

In addition, it should be pointed out that passive smoking is also harmful to health. For the health of yourself and others, please don't smoke.