A healthy cholesterol range can be viewed in two different ways. The first involves the total blood cholesterol level, while the other looks at the individual components of blood cholesterol. Blood cholesterol levels are determined by taking a blood test and analyzing the blood which is collected, and often the report will also include a note about the normal cholesterol range for reference.

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Cholesterol is a fat-like substance (lipid) present in the membrane of each one of our cells. Our body needs cholesterol to build cellular membranes, make hormones, digest our dietary fat intake, and assist with other very important bodily functions. Unfortunately there is a dark side to this seemingly helpful substance, one that negatively affects the lives of millions of people all over the world. Cholesterol travels in the blood in distinct particles containing both lipids and proteins (lipoproteins). When excessive amounts of cholesterol are circulated, they cause damage to the arteries, especially the coronary arteries that supply blood to the heart. Cholesterol ridden plaque accumulates in vessel linings leading to a condition called "atherosclerosis". This is the main cause of coronary disease and heart attacks, the primary cause of premature death in the developed world.

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