E-Cigarette study reveals how nicotine hits the bloodstream

This study looked at how the strength and form of nicotine in e-cigarettes affect how fast and how much nicotine gets into the blood. Thirty-six adults who vape regularly took puffs from different e-cigarette setups while their blood was sampled through a small tube in their arm. The goal was to understand which settings make nicotine delivery faster or stronger, which can help predict how addictive a device might be.