Which Smoking Habit Puts You Most at Risk? E cigarette flavors are toxic to white blood cells, warn scientists E cigarettes 'Potentially as Harmful as Tobacco Cigarettes' UConn Today In recent years, the number of e cigarette users worldwide has sharply increased, with many believing that vaping is less harmful than smoking traditional cigarettes. However, health experts are warning of its negative Community Medical Centers The rise of e cigarettes: addictive and deadly