By Imogen Howse & Rom Preston-Ellis Drinking less than one can of fizzy pop a day can increase the risk of irregular heart rhythms, warns a new study. Atrial fibrillation, known as AFib, is a condition which causes a person’s heart to beat irregularly and is linked with a five-fold increased chance of stroke. More than 12 million people are expected to have AFib by 2030, according to the American Heart Association. And now, a new study has revealed that consuming sweetened drinks may be a contributing factor. A team of scientists analysed data of 201,856 adults between the age of 37 and 73 who…