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After controlling for confounders, such as obesity and smoking, the investigators generated a PRS to model genetic risk and found an additive interaction between genetic susceptibility and air pollution, such that individuals with high genetic risk and high levels of exposure to air pollution were at greatest risk of developing lung cancer (PM 2.5 : HR 1.71, 95% CI 1.452.02) relative to those with low genetic risk and low air pollution exposure

With or without a cigarette

Passive smoking can: For elderly individuals, even low levels of exposure can lead to severe complications