Research shows need for further studies into air pollution and other causal factors, expert says

Summary

Lung cancer diagnoses among never-smokers are increasing, with air pollution identified as a key factor, according to the International Agency for Research on Cancer (IARC).

Adenocarcinoma, the most common subtype, accounted for up to 70% of lung cancer cases in never-smokers.

While lung cancer rates in men are declining, cases among women are rising.

Scientists urge further research into environmental causes and stress the need for targeted prevention strategies, including tobacco and air pollution control measures.