"Why do I have lung cancer even though I don't smoke or drink?" Ms. Li, a 38-year-old non-smoker, was devastated by her diagnosis. She had been experiencing a persistent cough which had worsened over time. Seeking answers, she visited the hospital only to be told that she had advanced lung cancer.

Despite her healthy lifestyle, Ms. Li discovered that she was not alone – there are many non-smoking women who develop lung cancer.

But how is this possible? In 2020, lung cancer accounted for 11.4% of all new cancer cases globally, with smoking being a major cause.

However, factors like exposure to secondhand smoke, cooking fumes, genetics, and occupational environments can also contribute to the development of lung cancer. For non-smokers, these factors become even more critical. Furthermore, during sleep, certain signs may indicate lung cancer – frequent dry coughing, chest and back pain, wheezing, and fever.

As early-stage lung cancer is often asymptomatic, regular check-ups are crucial for high-risk individuals. Regular screenings, such as low-dose spiral CT scans, can detect abnormalities in the lungs. Overall, non-smokers can develop lung cancer due to various factors, highlighting the importance of awareness and early detection.