Cooling ingredients in e-cigarettes linked to irregular heartbeats and increased cardiovascular risk in new research

New independent research, published in Circulation: Arrhythmia and Electrophysiology, a peer-reviewed journal of the American Heart Association, indicates that synthetic cooling ingredients in e-cigarettes can cause abnormal heartbeats (arrhythmias) and elevate cardiovascular risk measures. The study, conducted in mice and lab-grown human heart cells, is the first to suggest that these cooling agents may negatively impact heart health, raising concerns about increased risk for sudden cardiac arrest.