HDL

High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which are complex particles that transport lipids (fats) such as cholesterol and triglycerides through the bloodstream. HDL is often referred to as "good cholesterol" because it plays a crucial role in reverse cholesterol transport. This process involves collecting excess cholesterol from tissues and cells and returning it to the liver for excretion or reuse. This action helps to prevent cholesterol accumulation in arterial walls.