Cholesterol Dictionary

lipid: Fat or fat-like substance found in the blood, such as cholesterol.

lipoprotein: A blood protein that carries fat and cholesterol. Common types are HDL (high-density lipoprotein), LDL (low-density lipoprotein), VLDL (very low-density lipoprotein) and chylomicrons.

low-density lipoprotein (LDL) cholesterol: Low-density lipoprotein or "bad" cholesterol provides cholesterol for necessary body functions but in excessive amounts tends to accumulate in artery walls.

lymph: An almost colorless fluid that travels through the lymphatic system and that carries cells that help fight infection and disease.

lymphatic system: The tissues and organs of the human body that produce and store cells that fight infection and disease. This system has channels that carry lymph.

monounsaturated fats: Can help lower LDL cholesterol and raise HDL cholesterol. Found in olive and canola oils, avocados, peanuts and other nuts as well as in peanut butter. Monounsaturated fats are high in calories, so they should be used in moderation.

nicotinic acid (niacin): A form of vitamin B that can raise "good" HDL cholesterol levels.

omega-3 fats: Fats that help lower LDL cholesterol, raise HDL cholesterol, lower triglycerides (a type of blood fat) and that may reduce the risk of blood clots. Contained in flaxseed, canola oil, walnuts and fatty fish.