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. A new study from UC Davis found that disposable vapes have much higher concentrations of heavy metals like lead and nickel than traditional cigarettes. CBS Evening News Facebook Not All Flavored Disposable Vape Tied to Youth Use, Study Finds Newswire Study Finds Powerful Sweetener in Vapes Marketed to Teens Powers Health New study finds disposable vapes more toxic than traditional cigarettes #shorts YouTube