Safer Nicotine Products a Global Picture Global State of Tobacco Harm Reduction World Vape Day, E cig Summit and more! Tobacco Harm Reduction News Top 5 favorite pro vaping pro harm reduction studies. There are tens of thousands of them, but there are my five favorite most compelling studies done on the topic of nicotine vaping for tobacco Data show that e cigarettes reduce harmful constituents by 80 percent to 99.9 percent compared to cigarettes, while heated tobacco products cut key carcinogens by over 90 percent. Read then full story