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Smoking is harmful, not only to human health but also to society. As long as there are signs of life, any organized organism must breathe, exhale carbon dioxide, inhale oxygen in the air, and carry out metabolism to maintain normal life activities. Non-smokers can breathe a lot of fresh air every day; However, people who smoke regularly do not enjoy the benefits of nature. What they breathe in is not fresh air, but toxic gas polluted by smoke.

What problems can be caused by breathing "second-hand smoke"?

Secondhand smoke not only irritates eyes, nose and throat, but also greatly increases the risk of lung cancer and heart disease in non-smokers. If children live with some smokers, their respiratory system will be more susceptible to infection. Other symptoms include cough, asthma, excessive phlegm, impaired lung function and slow lung development.

What are the hazards of passive smoking to children's health?

Compared with first-hand smoke, second-hand smoke is very harmful to children. The first is the probability that a baby will die of unknown causes. The second is that the newborn's weight is lower than the standard value. The third is that children's ears are frequently infected with inflammation, and otitis media is more common. The fourth is children's lung and bronchial infection and inflammation, bronchitis, pneumonia, asthma, cough and other diseases. Fifth, exposure to second-hand smoke in childhood has an impact on the health of adults.

The greater the concentration of second-hand smoke, the greater the harm to children. However, the concentration of second-hand smoke is influenced by many factors, among which the source intensity has the greatest influence on the concentration of second-hand smoke and the greatest harm to children's health. The source intensity of secondhand smoke refers to the number of smokers and the number of smokers in the environment. Even if the indoor ventilation environment is good, the harm of second-hand smoke to children can not be completely avoided, and ventilation may also spread the smoke of second-hand smoke to other places to cause harm. Even with an air purifier, the harmful components of second-hand smoke floating in the air cannot be completely removed.

According to a worldwide survey, 5 out of every 10 children are exposed to secondhand smoke. In Eastern European countries, 8 out of every 65,438+00 children are exposed to secondhand smoke. There are thousands of harmful substances in the smoke after tobacco burning, and more than 60 harmful components can cause cancer, among which nicotine, carbon monoxide, arsenic, cyanide and other harmful substances are the most serious, which can directly enter children's bodies.

What are the benefits of quitting smoking?

Tobacco will damage almost all organs of human body, and quitting smoking can effectively prevent or delay the progress of smoking-related diseases. It is found that the death risk of patients with coronary heart disease can be reduced by about half after quitting smoking 1 year, and the death risk will continue to decrease with the extension of quitting smoking time. After quitting smoking 15 years, the absolute death risk of patients with coronary heart disease will be similar to that of never smokers. Quitting smoking and preventing exposure to secondhand smoke are the most important means to prevent and treat COPD, and quitting smoking is the only way to effectively delay the progressive decline of lung function. Quitting smoking can also reduce the incidence and mortality of stroke, peripheral vascular disease, pneumonia and gastric and duodenal ulcers. Therefore, quitting smoking is an important part of treating various smoking-related diseases. Quitting smoking can also reduce the harm of second-hand smoke exposure around people, especially family members and colleagues. Quitting smoking at all ages is beneficial, and "quitting smoking early is better than quitting smoking late, and quitting smoking is better than not quitting smoking at all". No matter when you quit smoking, you can win a longer life expectancy after quitting smoking. A 50-year prospective follow-up cohort study of British male doctors found that compared with non-smokers, the average life expectancy of smokers decreased by about 10 years, and quitting smoking at the age of 60, 50, 40 or 30 increased by about 3, 6, 9 or 10 years respectively. Moreover, the increased life expectancy after quitting smoking is a "healthy life year". Compared with continuous smokers, smokers are less accompanied by diseases and disabilities.