What are the hazards of secondhand smoke?

Smoking is harmful to health ",which is a well-known saying. Although almost everyone knows, there are still hundreds of millions of smokers in China, which is a huge number. They also know that smoking is bad for their health, but they still can't bear their restless heart, and they have to smoke one to be comfortable.

I have said a lot about the harm of smoking, and today I will talk about the harm of "second-hand smoke" to human body.

There have been news reports that a child who is only 13 years old has the blood vessels of an 80-year-old man, and his blood pressure is surprisingly high, even reaching 180mm Hg, far exceeding the normal blood pressure. The child's blood vessels are seriously aging and the vascular endothelium is seriously damaged. It turns out that the child's father is an old smoker and smokes several packs of cigarettes every day, so the child will smoke second-hand smoke every day.

Harm of secondhand smoke

Tobacco contains more than 200 kinds of harmful substances and more than 50 kinds of carcinogens. Just looking at the data is already terrible. More specifically, nicotine in tobacco is addictive and constricts blood vessels; Carbon monoxide will compete with people for oxygen; Hydrogen cyanide is used to make rat poison; Benzene is a carcinogen.

Compared with direct smoking, second-hand smoke is equally harmful. In secondhand smoke, there are more than 4,000 harmful substances such as tar, nicotine, suspended particulate matter, PM2.5 and ammonia, and dozens of carcinogens. Long-term inhalation of secondhand smoke can cause asthma, pneumonia, lung cancer, hypertension, coronary heart disease and other diseases, especially in children.

children

Secondhand smoke injury

pregnant woman

As we all know, it is necessary to quit smoking in the first three months of pregnancy. Pregnant women should not inhale second-hand smoke during pregnancy, because the harmful substances in second-hand smoke will enter the blood through the alveoli after being inhaled by pregnant women and be transported to the fetus through the placenta, leading to premature delivery, developmental retardation, brain hypoxia, death and other phenomena.

The biggest influence of secondhand smoke on children is the appearance of dental caries. There is nicotine in tobacco, but cotinine is a by-product of nicotine entering the blood, which leads to an increased risk of dental caries in children. In addition, due to the poor respiratory defense ability of infants, it will also lead to pharyngitis, tracheitis, asthma, hypertension and other diseases.

the aged

The harm of second-hand smoke to the elderly is mainly lung disease and cardiovascular disease.

Prevent secondhand smoke

① Smokers smoke on the balcony and enter the room after washing.

② Don't touch children after smoking;

(3) Windows are often opened for ventilation at home;

④ Smokers often change clothes;

⑤ Stay away from smokers in public places;

⑥ Regular physical examination.