What are the dangers of smoking to the human body What are the dangers of smoking to the human body?

The combustion of cigarettes contains more than 4,000 kinds of chemicals, of which nearly 20 harmful substances are contained in the gas phase. Carcinogenic effects such as dimethylnitrosamines, diethylnitrosamine hydrazine, ethylene chloride, carcinogenic effects such as formaldehyde, carcinogenic effects such as cyanide, acrolein, acetaldehyde, and other harmful substances, such as nitrogen oxides, pyridine and nitric oxide. There are more than 30 kinds of harmful substances in the particle phase, including pyridoxine, 1-methylindole, 9-methylcarbazole and catechol that promote cancer, bladder carcinogens such as B naphthylamine, carcinogens such as nickel, cadmium and arsenic, and harmful substances such as nicotine.

Zheng Jinchi, Department of Psychiatry, Quanzhou Third Hospital.

The effect of CO and nicotine in the above substances is strong, and the part of the cigarette that is lit and inhaled by the smoker is called mainstream smoke, and the part that comes out directly from the ignited part is called side-stream smoke. According to the World Health Organization, tobacco kills 4 million people worldwide every year, 70% of which come from developing countries. In the first 25 years of the next century, this number will rise to 10 million, making it one of the largest global health burdens.

Smoking can have serious effects on both the smoker itself and the passive smoker. Smokers may have cough, sputum production, increased blood pressure, increased heart rate, loss of appetite, gastric and duodenal ulcers, emphysema, chronic bronchitis, ischemic heart disease, lung cancer, oral cancer, laryngeal cancer, esophageal cancer, stomach cancer, bladder cancer, etc. Passive smokers can develop chronic bronchitis, respiratory dysfunction, ischemic heart disease, lung cancer, sinus cancer, etc.

Tobacco contains many harmful substances, and 69 carcinogenic chemicals are closely related to oral cancer, nasopharyngeal cancer, esophageal cancer, liver cancer and other tumors. It is also associated with asthma, pneumonia, bronchitis, bronchiectasis, cardiovascular disease. For example, myocardial infarction, smoking is also closely related to cerebrovascular disease.

First, smoking causes blood clots, triggering various heart diseases. 2. Brain damage caused by smoking. Third, the damage of smoking to the mouth. Fourth, the damage to the lungs caused by smoking. Fifth, the damage of smoking to the stomach.

Smoking can also affect the function of the lungs, easily damage lung tissues, make lung function decline, and prone to emphysema.

Smoke contains "tar" and "nicotine", and it is "nicotine" that is harmful to the human body!

The harm of smoking is accumulated over time, and it is difficult to see the harm for a while, so many people unknowingly ignore its seriousness and fatality, which also leads many people to start smoking without knowing what it is and not being wary of.

There are nicotine, tar, and many harmful substances, especially nicotine, which is a highly toxic substance, and it is also the source of people's addiction, but when people smoke it, they only smoke a small part, so they do not die.