Study: Potent sweetener neotame found by researchers in popular vapes Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports Disposable vapes ban could lead young adults to switch to cigarettes, study finds Turns out the disposable nicotine delivery systems are, as suspected, worse than the real thing, according to a new study from researchers at UC Davis. Young Vapers and Smokers Performed Similarly in New Study InsideHook