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Atrial fib: caffeine decreases recurrences

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  another study highlighting benefit of caffeinated coffee, this time finding a decrease in recurrent atrial fibrillation after ablation (see   afib caffeine dec afib recurrence JAMA2026  in dropbox, or doi:10.1001/jama.2025.21056), in the DECAF study (Does Eliminating Coffee Avoid Fibrillation) Details : --  200 current or previous (within past 5 years) coffee-drinking adults with persistent atrial fibrillation (AF), or atrial flutter with a history of AF, planned for electrical cardioversion from 5 hospitals in the US, Canada, and Australia between November 2021 and December 2024 in this  prospective, open-label, randomized clinical trial. The date of final follow-up was June 5, 2025. -- all patients had planned upcoming direct current electrical cardioversion -- patients who had sustained successful cardioversion were randomized to 2 groups: one group had regular caffeinated coffee consumption, and the other group to abstain from coffee and caf...
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coffee and tea help cognitive function

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  A recent epidemiological study found that the incidence of decreased cognitive function and the risk of dementia were less common in those drinking caffeinated coffee or tea (see   cognitive benefit coffee tea JAMA2026  in dropbox, or doi:10.1001/jama.2025.27259)   Details : -- two prospective  US  cohort studies, one including female participants in the Nurses’ Health Study (NHS, n = 86,606, with data from 1980-2023) and male participants from the Health Professionals Follow-up Study (HPFS, n = 45,215, with data from 1986-2023) who did not have cancer, Parkinson disease, or dementia at study entry -- These studies employed a rigorously validated assessment of food and beverage intake through food frequency questionnaires over these many years, with dietary intake collected and updated every 2 to 4 years -- dementia was identified via death records that included 98% complete data through state records, the National Death Index, next-of-kin confi...
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