New HRB evidence shows e cigarettes are associated with adolescents starting to smoke tobacco cigarettes HRB Health Research Board Plain language summary of meta analysis of ecigs and disease available Stanton Glantz blog That big claim that vaping leads to smoking may be based on insubstantial evidence More evidence that e cigs expanding nicotine addiction Stanton Glantz blog While vaping is not risk free, it is less harmful than tobacco Our World in Data