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 Temperature Control vs Variable Wattage A Guide On Modes V2 Cigs UK LCD E Nail Controller How Much Nicotine Is in a Cigarette? Tobacco Nicotine Strength Vaping Percentages UW CTRI UWMadison