Research team proposes ways to regulate and better manage e cigarette use Think vaping is harmless? Think again. E cigarettes may seem safer, but they still expose usersespecially teensto nicotine, harmful chemicals, and long term health risks. Nicotine can affect brain development, increase addiction risk, E cigarettes: Facts, stats and regulations PDF) E Cigarettes are More Addictive than Traditional CigarettesA Study in Highly Educated Young People