New estimates show that around 620,000 people in the UK are carrying a faulty gene that puts them at high risk of developing coronary heart disease or sudden death.
The overall figure could be more higher due to under-diagnosis and undiscovered faulty genes which can increase a person’s risk of these potentially fatal conditions.
These conditions can affect people of any age and each child of someone with an inherited heart condition have a 50% chance of inheriting it.
Find out more at the British Heart Foundation