E-cigarettes may slow down your heart rate – Medical News Today

E-cigarettes are particularly popular among high school students. The results of some new research, to be presented at the 2017 American Heart Association’s Scientific Sessions, reveal how electronic cigarettes affect heart rhythm and function in mice.

The new research was led by Daniel J. Conklin, Ph.D., an assistant professor at the University of Louisville in Kentucky.

Prof. Conklin and his colleagues set out to examine the effect of two aerosols commonly found in electronic cigarettes (e-cigarettes): propylene glycol and vegetable glycerin.

Although more and more people turn to e-cigarettes because of their perceived diminished health risks when compared with traditional cigarettes, the Centers for Disease Control and Prevention (CDC) warn that aerosols often contain cancer-causing chemicals and heavy metals, among other things.

The CDC also admit that the exact “health effects and potentially harmful doses of heated and aerosolized constituents of e-cigarette liquids […] are not completely understood.”

The new research — which will be presented at the American Heart Association’s (AHA) Scientific Sessions 2017, held in Anaheim, CA — brings us one step closer to understanding these health effects, with a focus on their impact on the cardiovascular system.

Studying e-cigarettes’ effects in mice

Prof. Conklin and team set out to examine the “acute electrocardiogram (ECG) effects of inhalation exposure” to the aerosols in so-called electronic nicotine delivery systems (ENDS).

ENDS include e-cigarettes and any other product that produces “an aerosolized mixture containing flavored liquids and nicotine that is inhaled by the user.”

The researchers also wanted to see how these effects would fare compared with mainstream cigarette smoke.

To this end, they exposed healthy male mice to ENDS for 9 minutes, a period of time that qualifies as acute exposure. The mice had ECG transmitters implanted in them.

Additionally, the mice were exposed to smoke from traditional cigarettes with and without nicotine, as well

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