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 The electronic cigarette epidemic Chronic Disease E cigarettes: effective cessation tool or new gateway to smoking tobacco? UICC How are Non Combusted Cigarettes, Sometimes Called Heat Not Burn Products, Different from E Cigarettes and Cigarettes? FDA Why Flavored E Cigarettes are Bad for You Roswell Park Comprehensive Cancer Center Buffalo, NY A Review of Toxicity Mechanism Studies of Electronic Cigarettes on Respiratory System