Not All Flavored Disposable Vape Tied to Youth Use, Study Finds Newswire Study: Potent sweetener neotame found by researchers in popular vapes 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 What's really inside vapes? We pulled them apart to find out Disposable vapes ban could lead young adults to switch to cigarettes, study finds Young e cigarette users report widespread use of flavor blends and concept flavors like Iced Mango, Blue Dream, and OMG