What harm does smoking do to your health?

Three main points of the harm of smoking: the smoke discharged after burning contains more than 20 kinds of toxins, and nicotine is the most harmful to life. In this regard, smoking has three major hazards: 1. It can directly poison life. Some people have obtained the following amazing results through animal experiments: even a big horse can't stand injecting nicotine into eight places and will soon die; A lively dog can be killed without injecting a drop of nicotine into the vein; In addition, after smoking for a long time, some animals can find that there is an obvious trend of vasoconstriction and even hardening. 2. It can destroy the nutrients of the human body. Smoking will hinder the body's absorption of vitamin C, and nicotine has a direct destructive effect on vitamin C. If the human body lacks vitamin C for a long time, there is a possibility of adverse blood diseases. 3, can induce a variety of diseases Because the smoke inhaled in the body has a malignant stimulating effect on respiratory tract, digestive tract and other organs, some people think that it is an inducing factor for gastric and duodenal ulcers, respiratory tract infections and even cancers such as mouth, lips, tongue, esophagus and respiratory tract. From this point of view, smoking is harmful to human health. So try to quit smoking or smoke less. Non-smokers had better not get into this hobby. Tobacco also contains many harmful substances, which also need to be detoxified in the liver. Therefore, smoking increases the burden on the liver and affects its function. Quit smoking even if you have hepatitis. Tobacco contains a variety of harmful substances, which will hinder the recovery of liver function, so hepatitis patients must make up their minds to quit smoking. Smoking increases the chances of cancer in the mouth, throat, esophagus and kidney. Similarly, the research results show that smoking is closely related to liver cancer. Studies abroad show that many patients with liver cancer who have never been infected with hepatitis B virus are long-term heavy smokers. The risk of liver cancer in these people increases with the number of cigarettes smoked every day. For example, people who smoke L- 10 cigarettes a day are 1.3 times more likely to develop liver cancer, 2.5 times more likely to smoke1-20 cigarettes a day, 3.7 times more likely to smoke 2 1-30 cigarettes, and 3.7 times more likely to smoke. Among people with hepatitis B, smoking also increases the risk of liver cancer. Studies have shown that people who smoke more than 300 cigarettes a year have a risk of liver cancer that is 1.5 times that of non-smokers. Although the relationship between smoking and liver cancer needs to be further clarified, many facts show that smoking is harmful and useless, and quitting smoking from the perspective of cancer prevention has become a conclusion. The liver is the main detoxification organ of human body, and its detoxification function declines after suffering from fatty liver, and the accumulation of nicotine contained in tobacco will aggravate the damage to the liver after being inhaled in large quantities, so it seems that the liver wants to play its detoxification function. In addition, patients with fatty liver often have poor liver microcirculation and stagnate. Nicotine can also damage the circulatory system, not only make blood vessels spasm, but also increase the viscosity of blood, leading to microcirculation disturbance in the body. At the same time, inhaling a lot of carbon monoxide when smoking will hinder the combination of hemoglobin and oxygen, leading to hypoxia. Therefore, patients with fatty liver smoke heavily, which can aggravate the microcirculation disturbance in the body, make the liver lack of blood supply and oxygen supply, further aggravate the damage to the liver and worsen the condition. Smoking is harmful! Whether you have fatty liver and want to get rid of it as soon as possible, or you don't want yourself and your family to be temporarily threatened by the disease, it is an unhealthy habit to quit smoking as soon as possible. The harm of smoking to human body includes: smoking in the brain can cause various brain diseases, reduce oxygen and blood circulating in the brain, lead to cerebral vascular bleeding and occlusion, and lead to paralysis, mental decline and stroke. The cause of stroke is that smoking leads to cerebral vasospasm, which makes blood coagulation easier. Smokers are twice as likely to have a stroke as nonsmokers. Laryngeal smoking can cause laryngeal cancer. Laryngeal cancer patients are mostly male. Smoking can cause fat accumulation and vascular occlusion on the heart and blood vessels, making smokers prone to coronary heart disease. The death rate of heart disease caused by smoking accounts for 25% of the total. The prevalence of smokers over 50 has doubled. The prevalence rate of smokers under 50 years old increased 9 times, reaching 14 times. Smoking will constrict blood vessels, slow down the circulation of blood and oxygen, and eventually lead to thickening of blood vessel walls, leading to coronary heart disease and stroke. Smoking will completely block the blood circulation of hands and feet, leading to amputation. Smoking in the lungs can cause lung cancer. 90% of the total mortality rate is caused by smoking. The prevalence rate of a person who smokes ten cigarettes a day is ten times that of a non-smoker. Damaged cells can't return to normal. The initial symptoms will not be found until the cancer cells spread to blood vessels and other organs. Smoking can also cause emphysema, and toxic substances accumulated in the bronchi of the lungs will hinder the normal exhalation of the air inhaled by the human body, make lung cells expand or rupture, and cause patients to have difficulty breathing. For people with gastrointestinal diseases, smoking is enough to make them worse. People with gastric ulcer or duodenal ulcer will slow down the healing of ulcer and even become chronic diseases. Smoking can stimulate the nervous system, accelerate the secretion of saliva and gastric juice, make the gastrointestinal tract often tense, and lead to the loss of appetite of smokers. In addition, nicotine can also contract gastrointestinal mucosal blood vessels and reduce appetite. Bone smokers have a longer fracture recovery period than non-smokers. It may be that nicotine and carbon monoxide contained in cigarettes slow down the process of bone regeneration. Nicotine constricts blood vessels and reduces blood flow to new bones. The carbon monoxide inhaled during smoking also reduces the speed at which oxygen enters the body. Smoking can lead to osteitis and back pain. Smoking more than ten cigarettes a day will double the prevalence of periostitis. Most people with severe back pain are addicted to smoking, because smoking will reduce the blood flow of the articular disc and the articular disc will degenerate early. Smoking can lead to arthritis. Smoking a pack of cigarettes a day will increase the prevalence rate by 50%. Female smokers are more likely to suffer from fractures and arthropathy after menopause. Smoking will lead to faster bone loss. Women smoke a pack of cigarettes every day from adolescence to menopause, and their bones are 5% to 10% less than those of non-smokers. When smokers enter menopause, the bone loss rate is faster. Smoking can interfere with estrogen, which is an important hormone in bone development. Bronchial smoking is the main cause of chronic obstructive tracheal disease. Because smoking can cause the cilia of bronchial epithelial cells to become shorter and irregular, cause dyskinesia, reduce local resistance and be susceptible to infection. Smoking in the liver will increase the burden on the liver. Regular smoking will affect the lipid metabolism of the liver, increase blood lipid, decrease benign cholesterol and increase malignant cholesterol. This has caused the burden of detoxification function of the liver to increase. Intestinal smoking can lead to colon cancer. The risk of this kind of cancer is directly proportional to the amount of smoking. Research shows that although quitting smoking can reduce the risk of heart disease, lung cancer and other diseases, the risk of colon cancer is still high. Eye smoking can lead to cataracts and affect vision. Research shows that there are twice as many cataract patients who smoke more than one pack a day as those who never smoke. Secondhand smoke Secondhand smoke is a kind of mixed smoke that is burned or exhaled by cigarettes, pipes or cigars when smokers smoke. Secondhand smoke is the most common pollutant in many smoking places. Smoke emitted during smoking can release more than 4,000 kinds of gases and particles, most of which are very strong irritants, and at least 40 of them can cause cancer in humans or animals. After smokers quit smoking, these particles can still stay in the air for several hours, can be inhaled by other non-smokers, and may be mixed with the decay products of radon gas, causing great harm to human health. When smoking harms smokers' own health, second-hand smoke will also affect non-smokers. In addition to irritating eyes, nose and throat, it will significantly increase 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 increased cough, asthma, excessive phlegm, impaired lung function and slow lung development.