Alcohol Can Cause Immediate Risk of Atrial Fibrillation – UCSF

A single glass of wine can quickly – significantly – raise the drinker’s risk for atrial fibrillation, according to new research by UC San Francisco. 

The study provides the first evidence that alcohol consumption substantially increases the chance of the heart rhythm condition occurring within a few hours. The findings might run counter to a prevailing perception that alcohol can be “cardioprotective,” say the authors, suggesting that reducing or avoiding alcohol might help mitigate harmful effects.  

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“Contrary to a common belief that atrial fibrillation is associated with heavy alcohol consumption, it appears that even one alcohol drink may be enough to increase the risk,” said Gregory Marcus, MD, MAS, professor of medicine in the Division of Cardiology at UCSF. 

“Our results show that the occurrence of atrial fibrillation might be neither random nor unpredictable,” he said. “Instead, there may be identifiable and modifiable ways of preventing an acute heart arrhythmia episode.” 

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