Wed Mar 05 12:42:47 UTC 2025: ## Lung Cancer on the Rise Among Nonsmokers, Especially Women: New Study

**New Delhi, [Date]** – A concerning trend is emerging in global cancer statistics: lung cancer diagnoses are increasing among individuals who have never smoked, particularly women. A new study published in *The Lancet Respiratory Medicine* and highlighted by the World Health Organization reveals a significant rise in lung cancer cases unrelated to smoking.

Globally, approximately 2.5 million new lung cancer cases were diagnosed in 2022, a 300,000 increase from 2020. Lung adenocarcinoma, the most common type of lung cancer in nonsmokers, accounts for roughly 60% of lung cancer cases in women and 45% in men.

Researchers attribute this increase to a complex interplay of factors, including:

* **Environmental toxins:** Exposure to radon, asbestos, diesel exhaust, and air pollution significantly increases risk. Secondhand smoke also plays a major role, with exposure at home or work increasing the likelihood of developing lung cancer.

* **Hormonal factors:** Estrogen may influence the development of lung cancer, potentially making premenopausal women more susceptible to aggressive forms of the disease.

* **Genetic predisposition:** While not always inherited, genetic mutations can increase susceptibility to lung cancer. Genetic testing is increasingly important in diagnosis and treatment planning.

* **Pre-existing lung conditions:** Individuals with a history of chronic obstructive pulmonary disease (COPD), asthma, or other lung diseases face a heightened risk.

* **Viral infections:** While research is ongoing, certain viruses are being investigated as potential contributing factors.

The study emphasizes the need for further research to understand the complex interplay of these factors to develop more effective prevention strategies and treatments. Early detection remains crucial in improving outcomes for lung cancer patients. The World Health Organization urges individuals to consult with healthcare professionals for any concerns regarding lung health.

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