People in Britain are failing to realise the danger heart disease poses to their health, a new study shows.
The poll found that only 15% of adults think the health of their heart is a current concern.
Cancer is the top health worry for people under 70 years old, despite heart disease and associated illnesses being the main cause of death in the UK, it added.
Cardiovascular diseases kill 208,000 people a year, and of those, coronary heart disease kills 117,000, according to the British Heart Foundation.
Health experts believe that people who do not face up to the risks are storing up problems for the future and endangering their lives unnecessarily.
Eve Knight, from the British Cardiac Patients Association (BCPA), said: "The survey clearly highlights the public know heart disease is the biggest killer, but they are simply not doing anything about it.
"When people imagine having heart health problems, they think of dying in old age from a heart attack.
"Whilst every year in the UK, over 117,000 people die from coronary heart disease, there are approximately 2.7 million people living with the condition."
She added: "Many find their quality of life severely affected. For some, heart disease is the cause of severe disability."