Study: average Indiana resident spends $543 a year on disposable vapes Study: Partial Flavor Ban on Vapes Had Addiction Consequences for American Students UW CTRI UWMadison 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 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 Standardizing Disposable Vapes May Reduce Teen Use RT