An imbalance of lipids and lipoproteins in the blood.

Dyslipidemia is a high level of cholesterol, triglycerides or both, or a low level of the "good" cholesterol, high-density lipoprotein (HDL) cholesterol, in the blood. Genetics, lifestyle and other factors can cause dyslipidemia. Dyslipidemia increases the chance of clogged arteries, known as atherosclerosis. It also increases the risk of heart attacks, strokes or other circulatory concerns.

Dyslipidemia usually causes no symptoms. Sometimes, when cholesterol levels are very high, fat is deposited in the skin and forms bumps. A blood test is the only way to check cholesterol levels.

Healthy diet, exercise and medicines can help treat dyslipidemia and prevent complications.