A large number of epidemiological studies have confirmed that smoking is a risk factor for many diseases. The main diseases caused by smokin
A large number of epidemiological studies have confirmed that smoking is a risk factor for many diseases. The main diseases caused by smoking:
1, lung cancer and a variety of malignant tumors: more than 90% of lung cancer caused by smoking, the incidence of lung cancer in smokers is no more than the times of non-smokers. Smoking can also cause oral cancer, laryngeal cancer, esophageal cancer, gastric cancer, pancreatic cancer, bladder cancer, kidney cancer, liver cancer, leukemia, as well as women with cervical cancer, breast cancer, etc..
2, chronic obstructive pulmonary disease: in the smoke of cigarette tar and other harmful substances long-term irritation of the respiratory tract, make smokers prone to chronic bronchitis, asthma, emphysema, resulting in chronic obstructive pulmonary disease, pulmonary heart disease. The rate of chronic obstructive pulmonary disease in smokers was 3~5 times higher than that of non-smokers. The greater the amount of smoking, the longer the duration of smoking, the earlier the age of starting smoking, the greater the risk of copd.
3, cardiovascular disease: tobacco tar, carbon monoxide and other toxic substances, can damage the myocardial and vascular wall caused by metabolic disturbance of cholesterol, high density lipoprotein deficiency, leading to hypertension, hypercholesterolemia, atherosclerosis and other diseases; smoking can cause increased blood viscosity, promote blood clots and reduce the ability of induction heart disease symptoms of the human body, eventually lead to coronary heart disease, sudden cardiac death.
4, cerebrovascular disease: smoking can increase the risk of cerebral hemorrhage, cerebral infarction and subarachnoid hemorrhage. The risk of stroke is times higher than that of non smoker in China, and more than 90% of male stroke patients are smokers.
5, digestive system disease: smoking can cause peptic ulcer, gastritis and esophageal, colon disease, especially can cause peptic ulcer recurrence.
6, endocrine diseases: smoking 20 cigarettes a day, can increase the risk of diabetes increased by 1 times. Smoking also promotes thyroid disease.
7, oral diseases, oral odor, light yellow teeth, they can cause lip cancer, oral cancer, oral leukoplakia, Candida albicans infection.
8, eye diseases: can cause toxic optic neuropathy, visual deterioration, macular degeneration, cataracts, etc..
9, smoking can also cause blood disease, osteoporosis and other diseases and male sexual dysfunction.