There is a special addictive consumer product in the world, even if it is used strictly according to the instructions of the consumer product, half of the consumers will eventually die of dependence on it, and it is known as the global resident killer.
In China, it kills more people than AIDS, tuberculosis, accidental deaths and suicide combined. This consumer product has only two words: cigarettes!
China is the most populous country in the world and the largest producer and consumer of tobacco. The total number of Chinese smokers together accounts for more than 1/3 of the world's smokers.
Relevant research surveys show that 60% of boys over the age of 15 in the mainland have long-term smoking habits. WHO has predicted that 100 million people on the mainland will die prematurely from smoking.
So the question is, what exactly is the harm caused by cigarettes, and is it really so terrible?
1, carcinogenicity: smoking carcinogenicity has been confirmed by WHO research, it is a class of carcinogens. Relevant research surveys have shown that a cigarette contains thousands of chemicals, of which 69 are related to cancer, especially polycyclic aromatic hydrocarbon compounds, nitrosamines, etc. are extremely strong carcinogens.
People who smoke for a long time are 13 times more likely to develop lung cancer than non-smokers, and the younger the age of exposure to tobacco, the greater the likelihood of cancer.
In addition to lung cancer, smoking is also closely related to oral cancer, digestive tract cancer, pancreatic cancer, cervical cancer and other cancers. There are even relevant investigations showing that harmful substances in tobacco may enter the fetus with the mother's placenta, resulting in an increased chance of future cancer of the fetus;
2. Cardiovascular and cerebrovascular system: a large number of research and investigation show that smoking is closely related to cardiovascular and cerebrovascular diseases. The larger the number of people who have been exposed to tobacco for a long time, the more likely they are to develop coronary heart disease, hypertension, cerebrovascular disease, and the surrounding blood vessel walls in the later stages.
More than 75% of all patients with coronary heart disease and hypertension in the mainland have a long history of smoking. The reason for this is that nicotine, carbon monoxide and other substances in the smoke will lead to damage to vascular endothelial cells, causing many problems such as arterial vasoconstriction, thickening and narrowing of the tube wall, slowing down blood flow, and promoting atherosclerosis and vasospasm, laying the foundation for cardiovascular and cerebrovascular diseases;
3. Respiratory tract: smoking is the most important cause of chronic bronchitis, emphysema and chronic airway obstruction.
A large number of studies have shown that in the process of long-term smoking, harmful substances in the smoke will damage the cilia tissue on the bronchial mucosa, resulting in damage and shortening of cilia, affecting the cleaning function of cilia.
In addition, it can cause hypertrophy of the submucosal glands, increased mucus secretion, and changes in composition, which may block bronchioles and increase the chance of respiratory disease.
There are even surveys that show that long-term smokers have a 2-4 times higher chance of developing chronic tracheitis than non-smokers;
4. Digestive tract: Relevant studies have shown that smoking may lead to an increase in gastric acid secretion, or even an increase of about 91.5% compared with non-smoking people.
At the same time, smoking can inhibit the ability of the pancreas to secrete sodium bicarbonate, resulting in an increase in duodenal acid load, which can easily induce peptic ulcers.
Moreover, the nicotine in tobacco will also cause a decrease in pyloric sphincter tone, easy to appear bile reflux, affect the stomach, duodenal mucosa defense factors, promote chronic inflammation, ulcers and other problems. Patients who originally had peptic ulcers will also have repeated episodes of smoking.
All in all, the health effect of cigarettes is systemic, and it can be said that it is harmful and not beneficial. From the mouth to the respiratory tract, from the digestive tract to the metabolic system, from the blood circulation to the brain and heart, it can all be affected and injured. Therefore, everyone should recognize the consequences of long-term smoking, and it is necessary to quit smoking as soon as possible.