What are the causes of lung cancer? Five factors are likely to cause lung cancer

There must be a cause for every effect, and the same is true for the emergence of lung cancer. Experts say that many people pay great attention to their physical health, but they ignore some bad habits that induce symptoms, which will give some diseases an opportunity to take advantage. So, for lung cancer, do you know the real reason why you suffer from this disease? Factor 1: Smoking Smoking is recognized as the main factor causing cancer lesions. Tobacco contains more than 3,000 harmful chemicals. The aromatic hydrocarbons in cigarettes can damage bronchial epithelial cells, providing strong conditions for the development of lung cancer genes. At the same time, it can also inhibit the role of certain tumor suppressor genes, and ultimately cause normal cells to become cancerous. The mortality rate of long-term smokers is much higher than that of people who do not have the habit of smoking. Smoking not only affects the person himself, but also causes great harm to the smokers around him. Data shows that the incidence of lung cancer in smokers is also increasing year by year. This is a very serious problem. Factor 2: Occupational and environmental hazards Among the various cancers caused by occupational factors, lung cancer is the most common one. According to statistics, about one in ten lung cancer patients have been directly or indirectly exposed to occupational hazards. Environmental pollution, such as water pollution, air pollution, crop pollution, etc., may also cause lung cancer. Factor 3: Ionizing radiation The lungs are very sensitive to ionizing radiation. The United States once reported that 70% of workers in radioactive mines in Ohio suffered from cancer, most of which were bronchial small cell cancer. In addition, the United States dropped an atomic bomb on Hiroshima during World War II. A few years later, the number of lung cancer patients among local survivors increased dramatically. The above two cases can prove the impact of ionizing radiation in causing lung cancer. Factor 4: Inheritance Genetic susceptibility, immune dysfunction, endocrine disorders, etc. also have a certain impact on the occurrence of cancer. Medical research has found that genetic factors only play a promoting role, for example, they play an important role in some people who are more sensitive to carcinogenic environments. Factor 5: The rapid development of air pollution industry, the large amount of automobile exhaust emissions, and the toxic chemicals separated from asphalt roads at high temperatures have caused serious air pollution. People who live in this environment for a long time and inhale a lot of dust are likely to develop lung cancer.