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 Monitoring E Cigarette Trends in the United States Disposable Vapes Release More Toxic Metals Than Traditional Cigarettes: UC Davis Study The Epoch Times Full article: Cognitive and Affective Responses to the U.S. FDA E Cigarette Addiction Warning and Advertisements among Young Adults in California: Product Design, Imagery, and Use UC Davis Tobacco Reporter