Bigger, stronger, and cheaper: Disposable e cigarettes have more nicotine and are more accessible than ever UC Davis study: Disposable vapes may be more toxic than cigarettes In a new study, researchers at YSM and @DukeU say the majority of disposable #vaping products tested contained #neotame, an #artificial sweetener 7,000x to 13,000x sweeter than sugar. Little is known about Study links youth vaping to increased metal exposure, raising public health concerns