Study: Potent sweetener neotame found by researchers in popular vapes One million people who never regularly smoked now vape in England UCL News UCL University College London Study: average Indiana resident spends $543 a year on disposable 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 Tobacco is Changing: E Cigarettes Wisconsin Department of Health Services Disposable vape use falling in UK ahead of government ban