Study Finds Powerful Sweetener in Vapes Marketed to Teens Powers Health Vaping growth stalls, UCL study reveals Better Retailing Elevated Toxic Element Emissions from Popular Disposable E Cigarettes: Sources, Life Cycle, and Health Risks ACS Central Science 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. Study: Potent sweetener neotame found by researchers in popular vapes