At the end of the study, the group that drank coffee experienced a 39% lower risk of recurring AFib episodes. In addition to coffee’s potential anti-inflammatory effects, the researchers proposed that those who drank coffee may have naturally replaced less healthy drinks, such as sugary sodas, with coffee instead. University of California – San Francisco. “Surprising heart study finds daily coffee may cut AFib risk by 39%.” ScienceDaily. http://www.sciencedaily.com/releases/2025/11/251110021046.htm (accessed November 10, 2025).
Journal Reference: Christopher X. Wong, Christopher C. Cheung, Gabrielle Montenegro, Hannah H. Oo, Isabella J. Peña, Janet J. Tang, Samuel J. Tu, Grace Wall, Thomas A. Dewland, Joshua D. Moss, Edward P. Gerstenfeld, Zian H. Tseng, Henry H. Hsia, Randall J. Lee, Jeffrey E. Olgin, Vasanth Vedantham, Melvin M. Scheinman, Catherine Lee, Prashanthan Sanders, Gregory M. Marcus. Caffeinated Coffee Consumption or Abstinence to Reduce Atrial Fibrillation. JAMA, 2025; DOI: 10.1001/jama.2025.21056
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It’s interesting that it was a year ago. My cardiologist told me this. I had talked to him about the use of alcohol and caffeine. And he told me that my giving up alcohol was a good idea for many reasons, but definitely for the atrial fibrillation. But he said that coffee does not make it worse and can even be a help. So I gradually resumed my caffeine consumption, nowhere near what I used to drink before. But I would say I typically in the morning have 2 to 3 cups, but nothing after about 10 in the morning.