Heart failure is most common in people over 65, but it can occur at any age due to smoking, high blood pressure or other factors.
It’s also often misunderstood: the diagnosis doesn’t mean your heart stops, but that it isn’t pumping enough blood and oxygen to meet your body’s needs.
It can make day-to-day activities like climbing stairs, or even walking, difficult.
What are the signs of heart failure? There are five: