The big issue with vape pen batteries is when they fail, which the U.S
A lot of research suggests that this marketing has something to do with the uptake of menthol [cigarettes], specifically in this group of individuals, Cohn says
Principal study author Allan Hackshaw, deputy director of the University College London Cancer Trials Centre, said he was personally motivated to conduct this study given his many friends and family members who have cut back on -- but not quit -- their smoking habits
But this gets the causation backwards
Essebag V., Hadjis T., Platt R.W., Pilote L
Smoke is harmful to the lungs, and pot smokers generally inhale deeply and hold their breath longer