Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica Make smokers into vapers Vaping substantially less harmful than smoking, largest review of its kind finds King's College London Vaping' Increases Odds of Asthma and COPD Johns Hopkins Medicine What Is the Best Vape for Heavy Smokers? (2025 UK) E cigarette use is linked to higher heart attack risk, especially in former smokers