A charity is appealing for funds to pay for cutting-edge research examining severe heart failure.
The British Heart Foundation (BHF) said regenerative medicine research could cure heart failure - a condition most commonly caused by a heart attack.
Launching its Mending Broken Hearts appeal, the charity said stem cell research and developmental biology could work out how to repair or replace damaged heart muscle.
The BHF said more than 750,000 people in the UK are living with heart failure.
Professor Peter Weissberg, medical director at the BHF, said: "More and more people are surviving heart attacks due to the huge advances we've made in cardiology, but that isn't the end of the story.
"A heart attack causes damage which can leave a person facing a horrendous daily struggle.
"We believe a cure for heart failure is a goal we can achieve. We want to advance the science so that when someone has a heart attack, doctors have the tools to help repair the heart.
"What we need now is for the public to help us fund this research and take it from the laboratory bench to the hospital bedside."