Association of Cigarette–E-Cigarette Transitions With Respiratory Symptom Resolution

Government agencies are increasingly weighing the risks and benefits of e-cigarette-assisted cigarette cessation given the reduced harm associated with e-cigarette use. This study provides novel evidence that completely transitioning from cigarettes to e-cigarettes is associated with increased rates of resolution from self-reported wheeze symptoms. However, risk exists in e-cigarette-assisted cigarette cessation, as those who transitioned from exclusive cigarette smoking to dual use and did not reduce their cigarette smoking intensity had decreased rates of respiratory symptom resolution compared with persistent smokers.