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A recent study published in The Lancet Respiratory Medicine journal highlights a troubling rise in lung cancer cases among individuals who have never smoked, with air pollution being a significant contributing factor. The research, conducted by experts from the International Agency for Research on Cancer and the World Health Organization, identified adenocarcinoma as the dominant lung cancer subtype, which now accounts for 53-70% of lung cancer cases in non-smokers globally as of 2022.
Lead author Freddie Bray emphasized that as smoking rates decline, the proportion of lung cancer among non-smokers has risen, with environmental factors playing a crucial role. Notably, in 2022, there were an estimated 908,630 new lung cancer cases among women worldwide, 541,971 of which were adenocarcinoma. The study also revealed that approximately 80,378 cases in women were linked to ambient particulate matter pollution.
Experts warn that these changing patterns in lung cancer incidence underscore the need for targeted tobacco and air quality control strategies, especially in high-risk populations.