What is high cholesterol?
High cholesterol (hypercholesterolaemia) is a condition in which the amount of cholesterol in the blood exceeds normal values. Cholesterol is carried in different particles (lipoproteins). Excess LDL (bad) cholesterol may be deposited in arteries, for example in the coronary arteries of the heart, the carotid arteries to the brain, and the arteries that supply blood to the legs.