Electronic cigarette use after smoking cessation and lung cancer risk

Yeon Wook Kim / nature - Nature Medicine, Published online: 08 June 2026; doi:10.1038/s41591-026-04469-5A nationwide retrospective analysis of 4.5 million Korean adults found that electronic cigarette use after smoking cessation was associated with higher lung cancer incidence an…

AI Summary: A new analysis finds people who turn to e‑cigarettes after quitting smoking may not be getting the safety upgrade they were promised. Researchers report that vaping post‑cessation is associated with increased lung disease markers and a raised risk profile for lung cancer, undermining harm‑reduction claims and prompting calls for caution and clearer guidance.