New research from the University of Louisville in Kentucky indicates that menthol-flavored, ice-effect e-cigarettes may disrupt heart rhythm and increase the risk of cardiac arrest. Scientists attribute these effects to the elevated levels of chemicals used to create the cooling sensation in these vaping products.

The study involved laboratory tests on both mice and human heart cells, revealing that exposure to synthetic coolants altered the interval between heartbeats. According to the investigators, these disruptions can lead to irregular heart rhythms, which are associated with a heightened risk of complications such as high blood pressure, elevated heart rate, and potentially sudden cardiac arrest.

Dr. Alex Carll, who led the research, highlighted that the electrical signaling of the heart may be prematurely advanced or delayed due to the coolants, raising concerns about the widespread use of such additives. He emphasized that, given the high concentrations of these substances in e-cigarettes, regulatory measures should be considered to address potential cardiac risks.

The findings emerge amid ongoing efforts by the UK Government to ban most flavored vaping products to curb their attractiveness to younger users. However, Dr. Carll noted that synthetic coolants produce a cooling effect without an identifiable flavor, allowing them to evade the scope of current proposed restrictions. This loophole could enable continued exposure to these potentially harmful chemicals despite pending regulations.

Further investigation is needed to fully understand the implications of synthetic coolants in e-cigarettes, but the study’s results signal a need for heightened scrutiny and possible revision of vaping regulations to include these additives.