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Good and Bad Cholesterol Triglycerides

Two types of special proteins (lipoproteins) carry cholesterol to and from cells in your body. One is Low-Density Lipoprotein, or LDL. The other is High-Density Lipoprotein, or HDL. The amount of each type of cholesterol in your blood can be measured by a blood test. 

LDL (BAD) CHOLESTEROL

LDL cholesterol is considered the “bad” cholesterol, because it contributes to fatty buildups in arteries (atherosclerosis). This condition narrows the arteries and increases the risk for heart attack, stroke and peripheral artery disease. 

HDL (GOOD) CHOLESTEROL

HDL cholesterol can be thought of as the “good” cholesterol. So, in the case of HDL cholesterol, higher levels are actually better.

Experts believe that HDL acts as a scavenger, carrying LDL (bad) cholesterol away from the arteries and back to the liver, where the LDL is broken down and passed from the body. But HDL cholesterol does not completely eliminate LDL cholesterol. Only one-third to one-fourth of blood cholesterol is carried by HDL.

A healthy HDL cholesterol level may protect against heart attack and stroke. Studies show that low levels of HDL cholesterol increase the risk of heart disease.

TRIGLYCERIDES

Triglycerides are the most common type of fat in the body. They store excess energy from your diet.

A high triglyceride level combined with high LDL (bad) cholesterol or low HDL (good) cholesterol is linked with fatty buildups within the artery walls, which increases the risk of heart attack and stroke.