E cigarettes may not contain tobacco, but they still deliver nicotine, a highly addictive substance that can harm the developing brain, increase blood pressure, and lead to long term addiction. Many also contain toxic Is vaping better than smoking? Ever since e cigs have made it to the market, they've been lauded as safer alternatives to harmful cigarettes offering satisfaction without the carcinogens. But recent skepticism has cast Heated Tobacco Products, Cigarettes, and E Cigarettes: What's the Difference PMI Science Vape Wholesale Distributor in the US: eCigs, eLiquid, Vaping Kit Some E Cigarette Flavors May Be More Harmful Than Others The Atlantic