More than a million people use e cigarettes to stop smoking and there's calls for them to be sold in hospitals but is vaping safe? E cigarettes Beat Patches in Reducing Low Birthweight Risk Respiratory Therapy WHO report gives misleading view on e cigarettes, experts argue Fox News E cigs outperform gum and patches in quit smoking study wtol.com Vaping is not a gateway to smoking with no sign young e cig users will move on to cigarettes, scientists say Vaping after stopping smoking linked to lower risk of relapse back to smoking