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 New study finds disposable vaping devices more toxic than traditional cigarettes Disposable vapes ban could lead young adults to switch to cigarettes, study finds How disposable vapes have become a prominent part of young people's lives UEA Metals found in disposable e cigarette vapor could pose health risks American Chemical Society