hairy tongue from smoking cigarettes Man's tongue mysteriously turns black

PLoS One (2013) 8:e54562.10.1371/journal.pone.0054562 40 HellerFFlorianPBojarskiCRichterJChristMHillenbrandBet alInterleukin-13 is the key effector Th2 cytokine in ulcerative colitis that affects epithelial tight junctions, apoptosis, and cell restitution

Depressant-like effects

The devices, which contain no tobacco but instead use heat to vaporize a nicotine-laced liquid, can be seen as a less toxic alternative to traditional cigarettes

2019 U.S House of Representatives launches an investigation into Juul for violating FDA regulations by claiming e-cigarettes help people stop smoking and were safer than cigarettes