New research from Cardiomyopathy UK shows that 68% of people in Cardiff don’t realise that a cause of sudden cardiac death is genetic and 49% are unaware of their family history of heart disease. Worryingly, 22% of Cardiffians with a family history of heart disease admit that they have never told their GP about it, and 20% with niggling health complaints have avoided telling their doctor because they fear the worst and are burying their head in the sand.   Cardiomyopathy – a disease…