Rhonda Patrick· PhD
Surprisingly, ground and instant coffee, but not decaf, was associated with a ~17% reduction in arrhythmias including atrial fibrillation compared with non-coffee drinkers.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Surprisingly, ground and instant coffee, but not decaf, was associated with a ~17% reduction in arrhythmias including atrial fibrillation compared with non-coffee drinkers.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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And this was in a dose dependent manner with two to three cups of daily coffee linked to 12% lower arhythmia risk and four to five cups associated with a 17% lower risk.