Coffee vs. heart rhythm: study tests if abstinence prevents AFib return

NCT ID NCT05121519

First seen Nov 01, 2025 · Last updated May 13, 2026 · Updated 26 times

Summary

This study looked at whether stopping coffee drinking can reduce the chance of atrial fibrillation (an irregular heartbeat) returning after a procedure called cardioversion. About 200 adults who drank at least one cup of coffee daily were randomly assigned to either quit or keep drinking coffee for six months. Researchers tracked heart rhythm recurrences and side effects to see if coffee abstinence made a difference.

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Contacts and locations

Locations

  • Royal Adelaide Hospital

    Adelaide, Australia

  • Sunnybrook Health Science Centre

    Toronto, Canada

  • UCSF Parnassus

    San Francisco, California, 94143, United States

Conditions

Explore the condition pages connected to this study.