Ego CE4 Vape Pen 1100mAh Starter Kit FIN Disposable E Cigarette Review E Cigarette Reviews and Rankings Don't be foolede cigs or vapes may be less harmful than cigarettes, but less harmful doesn't mean safe. Vapes can contain harmful substances including nicotine, heavy metals like lead, volatile organic compounds and Studies show that the negative health effects of e cigarettes are like that of traditional cigarettes. A Parkview expert explains the dangerous combination of highly addictive nicotine and the chemicals in e liquid. April 7, 2014: What are electronic cigarettes and why are they so popular? Tennessee Poison Center FREE 24 7 Poison Help Hotline 800.222.1222