What is LDL in Cholesterol?

Low Density Lipoprotein

HDL is High Density Lipoprotein.

LDL stands for low-density lipoproteins and they are a plasma protein. They contain relatively more cholesterol and triglycerides than protein and are derived mainly from the breakdown of very low-density lipoproteins.

LDL is Low Density Lipoproteins. When too much LDL cholesterol circulates in the blood, it can slowly build up in the inner walls of the arteries that feed the heart and brain. Together with other substances it can form plaque, a thick, hard deposit that can clog those arteries.

Low Density Lipoprotein (LDL) is a particle in the blood made up of cholesterol, other lipids, and proteins (hence, "lipoprotein"). The size of these particles gives them their names:

Very Low Density Lipoprotein (VLDL)
Low Density "" (LDL)
Intermediate Density (IDL)
High Density (HDL).

The LDL particles seem to be mainly involved in carrying cholesterol and fat molecules to the tissues, whereas HDL is thought to represent the body getting rid of cholesterol.

A high LDL value is associated with a higher risk of vascular disease (heart attack, stroke, etc.), whereas a high HDL value is actually considered a "negative" risk factor -- it cancels out a risk factor (such as family history, etc.). The ratio between the two (LDL and HDL) is the most commonly used value to follow.

LDL or low density lipoprotein also known as the bad cholesterol ,over time accumulates inside the arterial wall lining which eventually lead to coronary diseases,HDL,high density lipoprotein is the good cholesterol