Since their introduction in Europe in 2006 and the U.S. in 2007, the use of e cigarettes a.k.a., vapes has skyrocketed. A recent review from researchers in Australia found the results E cigarette and heated tobacco products use and sales in Viet Nam have declined, but illegal sales and hidden use remain a challenge. Using these products is illegal and can lead to fines Can Electronic Cigarettes Cause Cancer? American Council on Science and Health Vaping may increase risk of lung cancer Frontline