Drinking coffee and tea can reduce abnormal heart rhythms, which is
known to cause strokes, a study has found.
Many clinicians advise patients with atrial or ventricular arrhythmias to avoid caffeinated beverages. Arrhythmias, or abnormal heart rhythms, cause the heart to beat too fast, slow or unevenly.
While some arrhythmias may be harmless or even go unnoticed in patients, others can increase risk for sudden cardiac arrest.
Atrial fibrillation (AFib), the most common heart rhythm disorder, causes the heart to beat rapidly and skip beats, and if left untreated, can cause strokes.
A single cup of coffee contains about 95 mg of caffeine and acts as a stimulant to the central nervous system.
Once in the body, caffeine blocks the effects of adenosine, a chemical that can facilitate AFib.
Researchers at Alfred Hospital and Baker Heart and Diabetes Institute in Australia analysed multiple population-based studies to determine an association between caffeine intake and its effects on atrial and ventricular arrhythmias.
These studies have consistently shown a decrease in AFib with an increase in caffeine ingestion, with one meta-analysis of 228,465 participants showing AFib frequency decreasing by six per cent in regular coffee drinkers, and a further analysis of 115,993 patients showing a 13 per cent risk reduction
Many clinicians advise patients with atrial or ventricular arrhythmias to avoid caffeinated beverages. Arrhythmias, or abnormal heart rhythms, cause the heart to beat too fast, slow or unevenly.
While some arrhythmias may be harmless or even go unnoticed in patients, others can increase risk for sudden cardiac arrest.
Atrial fibrillation (AFib), the most common heart rhythm disorder, causes the heart to beat rapidly and skip beats, and if left untreated, can cause strokes.
A single cup of coffee contains about 95 mg of caffeine and acts as a stimulant to the central nervous system.
Once in the body, caffeine blocks the effects of adenosine, a chemical that can facilitate AFib.
Researchers at Alfred Hospital and Baker Heart and Diabetes Institute in Australia analysed multiple population-based studies to determine an association between caffeine intake and its effects on atrial and ventricular arrhythmias.
These studies have consistently shown a decrease in AFib with an increase in caffeine ingestion, with one meta-analysis of 228,465 participants showing AFib frequency decreasing by six per cent in regular coffee drinkers, and a further analysis of 115,993 patients showing a 13 per cent risk reduction
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