What is the most common cause of small cell lung cancer

In addition to air pollution, which we cannot choose, many patients with small cell lung cancer do not pay attention to the care and maintenance of their bodies. In addition, the fast pace of life nowadays will cause many friends to suffer from chronic lung diseases. In fact, many chronic lung diseases are very harmful to the lungs over time. Many people cannot withstand the damage of the body bit by bit and eventually develop lung cancer. So let me introduce the most common causes of small cell lung cancer.

1. Smoking is harmful to your health

The relative risk of death from lung cancer for smokers is 12.7, and those who smoke more than 30 cigarettes a day have a relative risk 22.3 times higher than non-smokers. In 1985, 82% of lung cancer deaths in the United States, or 31,600 deaths, were attributed to smoking. Many epidemiological studies have been conducted at home and abroad on the relationship between smokers and different types of lung cancer. Most of the research results show that smoking is closely related to squamous cell lung cancer and small cell lung cancer. At the same time, studies have shown that the risk of death from lung cancer can be reduced to the level of non-smokers after quitting smoking for 10-15 years.

2. Environmental tobacco smoke causes harm to the human body

It is composed of sidestream smoke released from burning tobacco and smoke exhaled by smokers, which account for 80% and 20% respectively. The smoke inhaled by smokers is called mainstream smoke. ETS contains various toxic substances, including mutagens and carcinogens, such as some chemicals (nitrous acid, 4-aminobiphenyl, benzopyrene), which are higher in ETS than in mainstream smoke released by burning tobacco. Studies have shown that the level of 4-aminobiphenyl-hemoglobin compounds in passive smokers is approximately equivalent to 14% of that in active smokers. 2%-3% of lung cancer diagnosed in smokers and non-smokers each year is caused by ETS.

3. Air pollution is quite serious, but we have to choose the environment in which we live.

It refers to the pollution formed after the pollutants are fully diluted by the air after being discharged. With the development of industry, especially the emission of waste gas and gas from cities and factories, the large-scale production and use of various carcinogenic industrial raw materials and products, the carcinogens in the air are increasing; various means of transportation, especially the exhaust gas discharged by cars, and the large-scale use of materials such as asphalt in paving and construction, cause air pollution.

Although lung cancer is mainly attributed to smoking in most countries, the risk for men who are already smokers and are exposed to urban air pollution is as high as 10 cases of lung cancer per 100,000 people per year. The results are therefore caused by the interaction of tobacco with chemical compounds in the atmosphere and vary by geographic region and over time.

4. The damage that chronic lung diseases cause to the body should not be underestimated.

For example, tuberculosis, silicosis, and pneumoconiosis can coexist with lung cancer. The incidence of these lung cancers is higher than that of normal people. In addition, chronic inflammation of the lung bronchus and lung fibrosis scar lesions may cause squamous metaplasia or hyperplasia during the healing process. On this basis, some lung cancer patients may develop into cancer.