For generations, lung cancer has been thought of as a smoker’s disease. But in recent years, doctors have noticed something surprising — and deeply concerning. An increasing number of people who have never smoked a single cigarette are being diagnosed with lung cancer. This shift has researchers racing to understand what’s causing it, pointing to a combination of environmental pollution, hidden chemical exposures, genetic factors, and modern lifestyle changes that may all play a role.
A Growing Global Concern
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