Your heart beats around 100,000 times every day and, in that time, pumps about 23,000 litres of blood around your body. But what happens when it doesn't work as well as it should? This free course, Understanding cardiovascular diseases, explains what happens in cardiovascular disease, when the heart's performance is affected, how the normal function of blood vessels is impaired, and what treatments are available. Whether you are a patient, relative, friend or healthcare professional, you will find the course interesting.