Atrial fibrillation is a 'modifiable' risk factor for stroke

There is good evidence that people with an irregular heart beat should have it checked by a doctor. The link between atrial fibrillation -- the most common disturbance of heart rhythm -- and risk of stroke is now beyond dispute, with studies indicating that diagnosed atrial fibrillation (AF) increases the risk of stroke five times. Similarly, one in five patients diagnosed with stroke are also found to have AF.

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