The harm of cigarettes

Cigarettes have appeared a long time ago, and there are relatively many smokers in our country. Although many people know the harm of cigarettes, many people still smoke. As for the harm of cigarettes, we should have a more detailed understanding of it so that we can reduce smoking correctly. The most common substance in cigarettes is nicotine, which is extremely harmful to the human body.

It can be said that nicotine can easily kill a cow, but because our human body can relieve it through the system, we may not notice its power in daily life. These nicotine will slowly erode the smoker's body organs until they degenerate.

The most toxic of these is nicotine. The nicotine in one cigarette is 6-8 mg, which is enough to kill a mouse; the nicotine in twenty cigarettes can kill a cow. The lethal dose of nicotine is 50-75 mg, which can be reached by smoking twenty to twenty-five cigarettes a day. It is only because nicotine enters the human body gradually and is gradually detoxified that it does not cause death, but the human body is also deeply harmed by it.

Compared with non-smokers, the incidence of lung cancer in smokers increases by 10-50 times, the incidence of coronary heart disease increases by 2-3 times, the incidence of chronic bronchitis increases by 2-8 times, and the incidence of oral cancer increases by 3 times. What is more noteworthy is that if the mother smokes, the child will develop slowly, become physically weak, and have low intelligence. In short, smoking will cause physical deterioration, damage to health, increase in diseases, shortened lifespan, and harm future generations.

It is a well-known fact that tobacco seriously harms people's health. There are 300 million smokers in China, 740 million people are exposed to secondhand smoke, and 1.2 million people die from tobacco-related diseases every year. Not only do smokers harm their own health, but the secondhand smoke they produce when smoking can also harm non-smokers, causing serious diseases such as malignant tumors such as lung cancer, chronic obstructive pulmonary disease, cardiovascular disease, cerebrovascular disease, and especially endangering the health of pregnant women, infants and children.

1. Lung disease: When cigarettes burn, they release 38 toxic chemicals, among which the main harmful ingredients are tar, carbon monoxide, nicotine, dioxins and irritating smoke. Tar is harmful to the mouth, throat, trachea and lungs. The tar in tobacco smoke is deposited on the villi of the lungs, destroying their function, increasing sputum, and causing chronic bronchial lesions, leading to tracheitis, emphysema, cor pulmonale, and lung cancer.

2. Cardiovascular disease: Carbon monoxide in cigarettes reduces the oxygen content in the blood, causing related diseases such as high blood pressure

3. Smoking causes cancer: 11 types of cancer, including lung cancer, stomach cancer, pancreatic cancer, bladder cancer, liver cancer, oral cancer, and sinus cancer, are "significantly correlated" with smoking. The reason why smokers are more likely to catch colds is because the activity of lymphocytes in the human body is reduced, which leads to cancer. Given the three major factors that cause smoking and cancer, the sooner you quit smoking, the better.

4. Smoking can also cause osteoporosis and early onset of menopause. Smoking can cause men to lose their sexual and reproductive functions

5. The harm of smoking to intelligence. Smoking can affect a person's concentration. Some people believe that smoking can refresh people, eliminate fatigue and trigger inspiration, which is completely unscientific. Experiments have shown that smoking seriously affects people's intelligence and memory, thereby reducing work and study efficiency.

Smoking is harmful and has no benefits. 53% of children in China are exposed to passive smoking, which is more harmful and more likely to suffer from pneumonia, bronchitis, severe asthma and other diseases.

Knowing the harm of cigarettes, it is best to stay away from them. Smokers are not unaware of these dangers; they smoke recklessly because they do not see the consequences of smoking. If smokers are found to have symptoms of intellectual and memory deterioration in their daily lives, they should stop smoking and receive treatment as soon as possible.