Tobacco contains many carcinogens, in addition, there are many carcinogens and ciliated toxins that can reduce the body's ability to expel foreign bodies. These poisons attach to the tiny particles of cigarette smoke, reach the alveoli, and deposit there, strengthening each other. As a result, the carcinogenic effect is greatly enhanced. People who smoke more than 10 cigarettes a day have a lung cancer mortality rate 2.5 times that of non-smokers. In addition, smoking can also cause laryngeal cancer, oral cancer, nasopharyngeal cancer, esophageal cancer, pancreatic cancer, bladder cancer and so on.
Smoking will aggravate cardiovascular diseases, accelerate atherosclerosis and thrombosis, lead to arrhythmia and even sudden death. Some scholars have found that the sudden death of smokers due to coronary heart disease is more than four times higher than that of non-smokers.
Smoking can damage the nervous system, make people's memory decline and age prematurely.
Smoking can damage the respiratory system. Smokers often cough and expectorate all the year round, and are prone to respiratory diseases such as bronchitis, emphysema and bronchiectasis.
Smokers are prone to gastric ulcer, because nicotine in cigarette smoke will destroy the acid-base balance of digestive tract.
In a word, smoking is very harmful to health. According to a report of the World Health Organization, at least 654.38+0 million people worldwide die prematurely every year because of smoking. The report also provides some surprising figures: 90% of lung cancer patients and13 of all kinds of cancer patients are caused by smoking, 75% of chronic bronchitis patients and 25% of heart disease patients are caused by smoking.
Smoking not only harms itself, but also harms others, forcing others to "smoke passively". In fact, all kinds of diseases that smoking may cause may happen to passive smokers.
Teenagers are in the period of growth and development, and they are more likely to absorb harmful and toxic substances and be poisoned than adults. Smoking will also affect the cultivation of teenagers' moral quality.
The problem of tobacco control has been widely concerned in all countries. Smoking is regarded as an uncivilized habit in people's minds. The more developed countries are, the more measures are taken to restrict smoking, and the number of smokers is gradually decreasing. Many governments have announced strict laws against smoking in public places. During the period of 1979, the State Council approved the Notice on the Harm and Control of Smoking issued by the Ministry of Health, and many health experts also issued a strong appeal, especially pointing out that the problem of adolescent smoking should attract the attention and concern of the whole society, which is considered to be a major event related to improving the quality of the people and creating a good social atmosphere.