Heart disease that affects more than a million Brits – and Miley Cyrus – increases dementia risk by 68 per cent and doubles the chance of suffering stroke, experts warn

Atrial fibrillation (AF) affects 1.4 Brits and celebrities including Elton John, Miley Cyrus, Tony Blair and Joe Biden are among celebrities known to suffer with it. Atrial fibrillation (AF) affects 1.4 Brits and celebrities including Elton John, Miley Cyrus, Tony Blair and Joe Biden are among celebrities known to suffer with it.