How disposable vapes have become a prominent part of young people's lives UEA 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 Metals found in disposable e cigarette vapor could pose health risks American Chemical Society Up in smoke: Considerations for lithium ion batteries in disposable e cigarettes: Joule Teens vaping more flavored marijuana and less nicotine, study finds