what is the electronic cigarette E-cigarettes: Facts, stats and regulations An Overview of E-Cigarette Impact

Researchers from the University of California San Francisco studied 70,000 people and found daily e-cigarette use doubled the risk of a heart attack

Cinnamon, vanilla and butter flavoring chemicals were the most toxic but our research showed that mixing flavors of e-liquids caused by far the most toxicity to white blood cells. Senior author, Dr Irfan Rahman, says he hopes this new data will provide insights into understanding the harmful effects of flavored e-juices without nicotine

[101] Another type is the Sub ohm tank

Food and Drug Administration proposed measures that would ban the sale of e-cigarettes to consumers younger than 18, but would not restrict flavored products, online sales or TV advertising

PMC 3995271