Hidden Causes of Lung Cancer in Non-Smokers Revealed Slowly
Lung cancer develops most frequently because of smoking yet many patients diagnosed never used tobacco products.
Hidden Causes of Lung Cancer in Non-Smokers Revealed Slowly
Lung cancer develops most frequently because of smoking yet many patients diagnosed never used tobacco products. Identifying the covered causes of these cases will lead to more effective disease prevention approaches and earlier diagnosis methods.
Secondhand Smoke Exposure
Passive smoking exposure which involves secondhand smoke constitutes a well-established danger for non-smokers to develop lung cancer. The mixture contains more than 4000 components that include 69 cancer-causing substances. The smoke that non-smokers breathe from others’ cigarettes gets transmitted through various spaces including homes residences and workplaces and designated smoking areas. Medical evidence confirms that non-cigarette users exposed to cigarette smoke increase their chances of lung cancer development by 20-30%. 
Air Pollution
The pollution of the air has become a leading factor which causes lung cancer in people who do not smoke. According to International Agency for Research on Cancer (IARC) under the World Health Organization analysis never-smokers reported rising lung cancer diagnoses and considered air pollution a major determining factor. Air pollution resulted in about 200,000 adenocarcinoma diagnoses throughout 2022 mainly in East Asia. 
Radon Gas
Radon represents one natural radioactive gas that leads to lung cancer development in people who never smoked. Soil decay of uranium produces radon gas which accumulates most prominently in homes starting from their basements and moving downwards. Radon gas exposure throughout many years becomes the main source of lung cancer developing after smoking-related causes. Other inhalant substances increase lung cancer risk to a dangerous extent together with exposure to secondhand smoke.
Occupational Exposures
People who work in specified fields encounter carcinogenic substances such as asbestos, arsenic and diesel exhaust because it elevates their lung cancer risk. People who work in construction along with mining and manufacturing sectors usually encounter these dangerous chemicals. Prolonged non-tobacco use of these agents leads to lung cancer development.
Genetic Factors
The genetic background determines the risk level for non-smokers to develop lung cancer. Genetic errors in particular genes boost individual vulnerability to the disease.
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