The cigarettes known by many different names—e-cigarettes, e-cigs, e-hookahs, mods, vape pens, apes, tank systems, electronic nicotine delivery systems (ENDS) and more—may cause harm by suppressing the immune system, as indicated by recent research. Last year, a study published in the American Journal of Physiology suggested that inhaling the vaporized flavored liquids in e-cigarettes is […]