Yes, by drinking coffee and tea can reduce abnormal heart rhythms, which is known to cause strokes, a study has found.
By having abnormal rhythms one can even get stroke a study has found. Atrial fibrillation causes the heart to beat rapidly and skip beats, and if left untreated, can cause strokes. Caffeine blocks the effects of adenosine, a chemical that can facilitate Afib.
Researchers At Alfred Hospital and Baker Heart and Diabetic institute in Australia analysed studies to determine an association between 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 study of 2,28,465 participants showing Afib frequency decreasing by 6% in regular coffee drinkers, and a further analysis of 1,15,993 patients showing a 13 % risk reduction.