https://gizmodo.com/e-cig-vapor-might-be-carcinogenic-mice-study-suggests-1822518775
"As the authors admit, though, tobacco smoke is chock full of other nasty chemicals that can cause cancer along with other health problems, like emphysema. The study seems to reaffirm the basic premise that e-cigarettes aren’t as dangerous as tobacco products, but it isn’t the first to suggest they (not to mention the various flavors added to them) have their own set of risks."
"As the authors admit, though, tobacco smoke is chock full of other nasty chemicals that can cause cancer along with other health problems, like emphysema. The study seems to reaffirm the basic premise that e-cigarettes aren’t as dangerous as tobacco products, but it isn’t the first to suggest they (not to mention the various flavors added to them) have their own set of risks."