A common belief that marijuana and e-cigarettes are healthier alternatives to traditional tobacco cigarettes has just been disproved by new research from the University of California San Francisco.

According to the study, published Tuesday in the journal Heart Rhythm, there’s evidence that e-cigarettes and cannabis have damaging effects on the heart that are similar to the negative effect of tobacco cigarettes. Vapes, joints and cigarettes can cause abnormal heart rhythms, writes Kron. 

“We found that cigarettes, e-cigarettes, and marijuana greatly interfere with the electrical activity, structure, and neural regulation of the heart,” lead author Dr. Huiliang Qiu, a postdoctoral scholar in the UCSF Division of Cardiology, stated. “Often, any single change can lead to arrhythmia disease. Unfortunately, these adverse effects on the heart are quite comprehensive.”

The research was funded by the California Tobacco-Related Disease Research Program, …

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