Some long-term smokers always felt fine before quitting, but felt unwell after quitting. They went to the hospital for a check-up and found that they had lung cancer. They thought that it was lung cancer caused by quitting smoking, which is a completely wrong attribution method. Tobacco contains more than 7,000 chemical substances, hundreds of harmful substances, and 69 carcinogens. Cancer is a long-term development process. It is discovered after quitting smoking that it often existed before quitting smoking. It is just because of withdrawal reactions and other factors that prompt patients to go for examinations in time. According to statistics: 5 years after quitting smoking, the risk of oral cancer, laryngeal cancer, esophageal cancer and bladder cancer will drop by half; 10 years after quitting smoking, the risk of lung cancer will drop by 50%; 20 years after quitting smoking, the risk of oral cancer, laryngeal cancer, esophageal cancer and bladder cancer will drop to almost the same as that of people who never smoke. It is recommended that everyone quit smoking as soon as possible and dissuade others from smoking. Author: Science rumor refutation new media Tang Qin, Director and Researcher of the Science Popularization Department of the Chinese Medical Association |
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