Study finds that marijuana and e-cigarettes can harm the heart as seriously as traditional cigarettes

Credit: Pixabay/CC0 Public Domain

E-cigarettes and marijuana have harmful effects on the heart similar to those caused by tobacco cigarettes, opening the door to abnormal heart rhythms, reports a team of researchers at UC San Francisco.

The study is published November 15, 2022 in the journal Heart Rhythm.

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

For the heart to work well, it must pump blood efficiently and with correct timing. The heart has its own electrical control system resulting from nerves that control it. It also has the ability of electrical impulses to move through the heart muscle in a way that…

Continue reading at

About Medical Express

Medical Xpress is a web-based medical and health news service that is part of the renowned Science X network. Based on the years of experience as a medical research channel, started in April 2011, Medical Xpress became a separate website. Branching out with's monthly 2.5 million readership, Medical Xpress features the most comprehensive coverage in medical research and health news in the fields of neuroscience, cardiology, cancer, HIV/AIDS, psychology, psychiatry, dentistry, genetics, diseases and conditions, medications and more.

Leave a Reply

Your email address will not be published. Required fields are marked *