Just saw this - not sure if it has already been posted:
Study suggests e-cigarette flavorings may pose heart risk
Article reports that laboratory tests on "cells that normally line healthy human blood vessels" using six different e cigarette flavorings concluded that "vaping and some flavorings, even without nicotine, triggered blood vessel dysfunction that can increase the risk of heart disease..."
Apparently they found that cinnamon and menthol flavors were the "most toxic".
Study suggests e-cigarette flavorings may pose heart risk
Article reports that laboratory tests on "cells that normally line healthy human blood vessels" using six different e cigarette flavorings concluded that "vaping and some flavorings, even without nicotine, triggered blood vessel dysfunction that can increase the risk of heart disease..."
Apparently they found that cinnamon and menthol flavors were the "most toxic".