Teenage Vaping Declines This Year, Survey Says The New York Times UC Davis study: Disposable vapes may be more toxic than cigarettes Full article: AusVapeSafety: a prospective observational study of vape exposures and outcomes to an Australian Poisons Information Centre 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. Vaping tied to increased lead, uranium exposure risk: Research