What are the common causes of lung cancer?

The cause of lung cancer is still not completely clear. Many people who have lung cancer do not find out that they have lung cancer until the middle or late stage of the disease. A lot of data show that the cause of lung cancer is related to the following factors:

(I) Smoking is one of the causes of lung cancer. Long-term smoking can cause the proliferation of bronchial mucosal epithelial cells, which can induce squamous cell carcinoma or undifferentiated small cell carcinoma. Although non-smokers can also develop lung cancer, adenocarcinoma is more common.

(2) The cause of lung cancer is air pollution, which seriously damages human health.

(III) Occupational factors are also the cause of lung cancer. Long-term exposure to radioactive substances such as uranium and radium and their derivatives, carcinogenic hydrocarbons, arsenic, chromium, nickel, copper, tin, iron, coal tar, pitch, petroleum, asbestos, mustard gas and other substances can induce lung cancer, mainly squamous cell carcinoma and undifferentiated small cell carcinoma.

(IV) Chronic lung diseases are also one of the causes of lung cancer if they are not treated. For example, tuberculosis, silicosis, pneumoconiosis, etc. can coexist with lung cancer. The incidence of cancer in these cases is higher than that of normal people. In addition, chronic inflammation of the lung bronchi and lung fibrosis scar lesions may cause squamous metaplasia or hyperplasia during the healing process. On this basis, some cases may develop into cancer.

(V) Internal factors of the human body such as family heredity, reduced immune function, metabolic activity, and endocrine dysfunction.

The main causes of lung cancer are the points mentioned above. It is very necessary to understand the causes of lung cancer so that we can prescribe the right medicine and treat lung cancer in time, which is the key to curing lung cancer.

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