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The #2 leading cause of lung cancer after smoking is from radon gas in your home Potentially dangerous occupations raise your risk of lung cancer Toxic chemicals at work, such as arsenic, chromium compounds, nickel compounds, and polycyclic aromatic hydrocarbons (PAHs), cause lung cancer

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Harv Rev Psychiatry 12:305320 Akhtar-Khaleel WZ, Cook RL, Shoptaw S, Miller EN, Sacktor N, Surkan PJ, Becker J, Teplin LA, Beyth RJ, Price C, Plankey M (2017) Association of midlife smoking status with change in processing speed and mental flexibility among HIV-seropositive and HIV-seronegative older men: the Multicenter AIDS Cohort Study