Ischemic heart disease and coronary heart disease are sometimes confused because the two conditions share similarities. The first term is used to describe a situation whereby there is insufficient blood flow to some areas of the heart; it does not necessarily mean there is a blockage.
Likewise, the narrowing of arteries _ a characteristic of coronary heart disease_does not always result in a reduction of blood supply to the heart. However, most of the time, these two "buddies" come visiting together.
Think of your heart as a water pump that sends blood to every part of your body. The needs of each part of your body varies depending on what you are doing at a specific time. If you have just eaten, more blood flows to your digestive system. When you are stressed out, the brain needs more blood. When you are exercising, there is an increase of blood flow to the muscles you are using most.
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