Changes in expenditure on vaping in the context of the rise of disposable vapes and impending regulatory changes: a population study in Great Britain, 2021 2025 medRxiv Clearly flavored: the rise of clear e cigarettes 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 Why are disposable vapes so popular? Allen Carr's Easyway One million people in England vape despite never having smoked regularly, study finds Vaping The Guardian