Carry a large amount of cholesterol, which they deposit in arterial walls. This type of cholesterol is a risk factor for developing atherosclerotic plaques in artery walls. Desirable blood levels are 130 mg/dl. Individuals with documented CAD should attempt to reduce LDL levels to 100 mg/dl or less.
Also called "bad cholesterol", LDLs is manufactured by the liver. Its job it to transport fats - including cholesterol - from the liver to the areas of your body that need the fats (such as your organs, muscles, and your tissues). If your LDL levels are high, it suggests that there is plenty of cholesterol in your blood, which increases the chances of clogged arteries, which in turn in very dangerous for your heart.
Low density lipoproteins, also referred to as LDL, is known as the "bad cholesterol". LDLs are produced by the liver and carry cholesterol and other lipids (fats) from the liver to different areas of the body, like muscles, tissues, organs, and the heart. It is very important to keep LDL levels low, because high levels of LDL indicate that there is much more cholesterol in the blood stream than necessary, therefore increasing your risk of heart disease.