New research has shown that restricting teenagers from vaping pushes young adults back to smoking. According to a new study from Dhaval Dave, an economics professor from Bentley University, Bo Feng, a doctoral student at Georgia State University, and Michael Pesko, a health economist and assistant professor of health-care policy and research at Weill Cornell Medical College, youth smoking in the US has jumped from 0.7 to 1.4 percentage points. Researchers have argued that by making in harder for people younger than 18 to buy e-cigarettes, teenagers are turning to traditional cigarettes. “When you make it harder to buy e-cigarettes, the unintended consequence of this action is continuing regular cigarette consumption,” Michael Pesko said. Research recently showed that the effectiveness of e-cigs is affected by regulations, and it was found in an alternative study that young vapers do not think vaping increases chances of smoking. However, it seems that e-cig regulation will push teenagers to smoke, which does sound somewhat counterintuitive. Upcoming UK regulation, courtesy of the EU's Tobacco Products Directive, will make changes to e-cigs from May 20. One of the TPD's objectives is to limit e-cig sale to teenagers.