Your Vape Pen Might Be Full of Lead Disposable e cigarettes are more toxic than traditional cigarettes, study finds Here & Now Disposable vapes more toxic and carcinogenic than cigarettes, study shows UC Davis study: Disposable vapes may be more toxic than cigarettes A new study from the University of California, Davis, reveals that popular disposable vapes from brands like ELF Bar, Esco Bar, and Flum Pebble emit more lead than smoking 20 packs of Disposable Vapes Release More Toxic Metals Than Traditional Cigarettes: UC Davis Study The Epoch Times