For the first time, more than 1.5 million Brits have been diagnosed with a heart condition that increases the risk of stroke by four to five times.
Atrial fibrillation is a condition that causes an irregular and often fast heart rate that can lead to blood clots. The number of people in the UK diagnosed with it has increased from one million in 2013, report the British Heart Foundation (BHF).
Also known as a-fib, it is believed to contribute to one in five strokes, yet some people living with it will experience no symptoms. Although it is not usually life threatening, atrial fibrillation is a serious condition and often requires treatment.