Coronary heart disease happens when your heart's blood supply is blocked or interrupted by a build-up of fatty substances in the coronary arteries.
Over time this can build up and if your coronary arteries become narrow due to this build-up of fatty deposits, the blood supply to your heart will be restricted; this can cause angina (chest pains).
If a coronary artery becomes completely blocked, it can cause a heart attack.
By making some simple lifestyle changes, you can reduce your risk of getting CHD. If you already have heart disease, you can take steps to reduce your risk of developing further heart-related problems.
Coronary Heart Disease - NHS Choices
Find Heart Disease Support Services- NHS Choices
Making your weekly shop healthier - Interactive tool NHS Choices
If you are interested in accessing further information on heart disease and how to manage it the British Heart Foundation offers a wealth of information to help you.
Hertbeats is a cardiac support group for St Albans, Harpenden and surrounding areas for those who have suffered a heart event as well as partners, carers, people with hypertension or those who are interested in prevention.
Videos from NHS Choices:
Too much cholesterol in the body causes coronary disease such as angina, heart attack and stroke. Dr Jonathan Morrell explains who is at risk and the treatments available.