The British Medical Journal published the survey results of smoking by researchers from Cancer Research UK, wolfson Institute of Preventive Medicine, University of London and Hong Kong University of Science and Technology. Through the analysis of 55 papers involving nearly 7 million people, it is found that smoking can significantly increase people's risk of cardiovascular disease, but it has little to do with the amount of smoking.
Smoking 20 cigarettes a day increases the risk of coronary heart disease for men 127% and for women, 295%.
But even if you smoke only one cigarette a day, the risk of coronary heart disease will still increase by 74% for men and 1 19% for women.
In other words, the risk of coronary heart disease caused by smoking one cigarette a day is about half that of smoking 20 cigarettes a day.
Studies have always pointed out that 80% of lung cancer is related to smoking. Smoking is linearly related to the increased risk of lung cancer.
But even if you only smoke one cigarette a day, the risk of lung cancer and cardiovascular disease is very high.
According to statistics, among the deaths related to smoking, nearly half died of cardiovascular diseases and nearly half died of lung cancer. Obviously, in life, many people ignore the risk of cardiovascular disease caused by smoking.
Therefore, there is no "safety line" for smoking. The only way to reduce the health impact of smoking is to give up smoking completely.
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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 in the body, 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.
Tobacco leaves contain toxic nicotine, also called nicotine. 1 g nicotine can poison 300 rabbits or 500 mice. If people are injected with 50 milligrams of nicotine, they will die.
Smoking is the most harmful to the respiratory tract, and it is easy to cause cough diseases such as laryngitis, tracheitis and emphysema. When smoking, smoke enters from the mouth, passes through the throat, trachea and bronchus, and enters the blood.
Smoking can make men lose Y chromosome and increase the risk of cancer. [ 1]
2065438+0710127 October, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was preliminarily sorted out for reference. Smoking is in the list of carcinogens. /baike . Baidu . com/item/% E5 % 90% B8 % E7 % 83% 9F/ 1423975？ Fr = Aladdin "target =" _ blank "title =" Baidu Encyclopedia-Smoking "> Baidu Encyclopedia-Smoking