Scientific review finds e cigarettes likely cause lung and oral cancer Electronic Nicotine Delivery Systems (ENDS), including e cigarettes and vapes, are often perceived as a safer alternative to traditional tobacco. But is the evidence really supporting this belief? A recent umbrella review published E cigarettes around 95% less harmful than tobacco estimates landmark review GOV.UK Nicotine ECigarettes Help Smokers Quit Review Concludes Powers Health Public Health Consequences of E Cigarettes