By Steven ReinbergĀ 

HealthDay Reporter

THURSDAY, Oct. 20, 2022 (HealthDay News) — Using marijuana increases the risk of developing the heart rhythm disorder atrial fibrillation (a-fib), a new study suggests.

It’s been known that drugs such as methamphetamine, cocaine and opiates can directly affect the heart and cause abnormal rhythms like a-fib, but weed can increase the risk by 35%, researchers found.

“There is a common perception that cannabis may be healthy because it’s ‘natural,'” said lead researcher Dr. Gregory Marcus, a professor of medicine at the University of California, San Francisco. “But as laws become more lenient in allowing use of these substances,…


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