What are the common causes of lung cancer? The three major causes of lung cancer need to be taken seriously

Expert introduction: One of the most common primary malignant tumors is definitely lung cancer. In recent decades, the incidence and mortality rates of various countries have been increasing. There are many causes of lung cancer, mainly related to environmental changes and eating habits. The following is an introduction to the causes of lung cancer:

1. Smoking

Numerous studies have shown that smoking is the primary cause of the progressive increase in lung cancer mortality. Benzopyrene, nicotine, nitrosamines and a small amount of radioactive elements such as polonium in smoke are all carcinogenic, especially squamous cell carcinoma and undifferentiated small cell carcinoma. Compared with non-smokers, smokers have an average risk of lung cancer that is 4 to 10 times higher, and heavy smokers have a risk that is 10 to 25 times higher.

Passive smoking or environmental smoking is also one of the causes of lung cancer. The risk of lung cancer in non-smoking wives whose husbands smoke is twice that of wives in non-smoking families, and the risk increases with the amount of smoking by the husband.

(II) Occupational carcinogens

The confirmed occupational factors that cause lung cancer in humans include asbestos, arsenic, chromium, nickel, beryllium, coal tar, mustard gas, trichloromethyl ether, chloromethyl methyl ether, heating products of tobacco, radon and radon protons produced by the decay of radioactive substances such as uranium and radium, ionizing radiation and microwave radiation. These factors can increase the risk of lung cancer by 3 to 30 times. Among them, asbestos is a recognized carcinogen. The incidence of lung cancer, pleural and peritoneal mesothelioma in those exposed to it is significantly increased, and the incubation period can be up to 20 years or longer. The lung cancer mortality rate of smokers exposed to asbestos is 8 times that of non-exposed smokers.

3. Air pollution

Air pollution includes indoor micro-environment and outdoor macro-environment pollution. Passive smoking, fuel combustion and cooking in indoor environment may produce carcinogens. Data show that using coal indoors, contact with coal smoke or its incomplete combustion products are risk factors for lung cancer, especially for female adenocarcinoma. The oil smoke released by heating during cooking is also a carcinogenic factor that cannot be ignored. In the atmosphere of heavy industrial cities, there are carcinogens such as 3,4-benzopyrene, arsenic oxide, radioactive substances, nickel, chromium compounds and non-combustible aliphatic hydrocarbons.

Finally, let me add some views on lung cancer from TCM. TCM believes that emotions can cause liver depression and qi stagnation in the human body. It is precisely because of this long-term liver depression and qi stagnation that lung cancer occurs. It can be seen that emotions have a great influence on the formation of lung cancer.