E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health Study links youth vaping to increased metal exposure, raising public health concerns All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center Study: Partial Flavor Ban on Vapes Had Addiction Consequences for American Students UW CTRI UWMadison Vaping as a teenager is a gateway to smoking, study suggests