1, Malignant tumor: Tobacco smoke contains a variety of carcinogens, and long-term exposure to these substances will increase the risk of suffering from a variety of malignant tumors, among which lung cancer is the most common. In addition, the risk of oral and nasopharyngeal tumors, esophageal tumors, gastric cancer, liver cancer and other malignant tumors will also increase;
2. Chronic diseases of respiratory system: the most common are chronic bronchitis and chronic obstructive pulmonary disease. There is clear evidence that smoking can lead to chronic obstructive pulmonary disease; The risk of lung cancer in general smokers is 13 times that of non-smokers, and the incidence of chronic bronchitis, emphysema and chronic obstructive pulmonary disease in smokers has also increased significantly.
3. Cardiovascular and cerebrovascular diseases: Smoking and secondhand smoke exposure are closely related to the occurrence of coronary heart disease, stroke and peripheral arterial diseases. Smoking is closely related to the formation of atherosclerotic plaques, and it will also increase the risk of other cardiovascular and cerebrovascular diseases, such as changes in blood lipids and abnormal glucose tolerance. The incidence of hypertension, coronary heart disease, myocardial infarction, cerebral infarction and peripheral vascular diseases among smokers also increased significantly. Smoking also affects the digestive system, which can increase the secretion of gastric acid, inhibit the secretion of sodium bicarbonate in pancreatic juice, increase the acid burden of the stomach and easily induce ulcers. At the same time, smoking can reduce the tension of lower esophageal sphincter and increase the risk of reflux esophagitis. Smoking affects many systems of the body. Here are just a few common systems. Smoking is harmful to health, so smokers are advised to try to quit smoking.
4. Other system diseases: such as reproductive system diseases and peptic ulcer. Inhaled carbon monoxide can also stimulate blood vessels, leading to vasospasm, which can lead to cerebrovascular accidents, coronary heart disease and hypertension. In addition, vasculitis and diabetes are also related to long-term smoking. Compared with non-smokers, smokers are much more likely to suffer from myocardial infarction and lung cancer. Secondhand smoke is also harmful to health. Exhaust smoke and odor in tobacco will lead to breathing difficulties of passive smokers, thus increasing the probability of suffering from chronic obstructive pulmonary disease.