Georgia Virtual School (GAVS) Health Exam

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What is the major single cause of lung cancer?

Alcohol consumption
Air pollution
Cigarette smoking
Genetic factors

The correct answer is: Cigarette smoking

Cigarette smoking is identified as the major single cause of lung cancer due to its well-established link with the disease. Research indicates that over 85% of lung cancer cases are directly correlated with tobacco use. Cigarettes contain numerous carcinogens, such as tar and various chemicals, which can damage lung tissue and lead to the development of cancerous cells. The risk of lung cancer increases significantly with the duration and intensity of smoking, making it a primary target for public health initiatives aimed at reducing cancer rates. While other factors, such as air pollution, genetic predispositions, and alcohol consumption, can contribute to lung cancer risk, none have the same level of impact or direct association as cigarette smoking. Efforts to curb smoking rates have been critical in lung cancer prevention and awareness campaigns worldwide, highlighting the importance of smoking cessation for reducing the overall incidence of this disease.