More American adults perceive electronic cigarettes to be as harmful as or more harmful than regular cigarettes, according to a new analysis. When the results of both surveys were combined, the percentage of people who believed that e-cigarettes were less harmful than regular cigarettes decreased from 45% in 2012 to 35% in 2017. The number of people who thought e-cigarettes were as harmful as cigarettes increased to 45% in that time, and the percentage who believed that e-cigarettes were more harmful remained low, at less than 10%, according to the results [...]