The proportion of people who have never smoked being diagnosed with lung cancer is rising, with new research pointing to air pollution as a growing contributor to lung cancer around the world.
Researchers from the International Agency for Research on Cancer said for never-smokers, lung cancer was the fifth largest leading cause of cancer deaths worldwide. Those cases were nearly exclusively the subtype adenocarcinoma — a tumour that forms in the glandular tissue — and largely in women and Asian populations.
The research, published in The Lancet Respiratory Medicine journal, found nearly 200,000 or about 15 per cent of all adenocarcinoma cases in 2022 were a result of air pollution, suggesting the risk of lung cancer linked to air pollution was also on the rise, particularly in east Asia and China.