Cigarettes contain over 7000 chemicals and 70 of those are Carcinogens (cancer causing agents). Vaping only contains 4 chemicals, Polypropylene Glycol, Vegetable Glycerin, Tobacco derived nicotine and natural and artificially flavoring. There has not been any long term studies (20+ years) on vaping as of yet but there is evidence supporting over the shorter studies (5-10 years) Vaping is without a doubt a healthier alternative to traditional combustible cigarettes. Public Health England still stands its ground today with that claim.