By: Cara Kingman

What are LDL and HDL?

LDL stands for low-density lipoprotein.  LDL gets collected in the walls of blood vessels and cause blockages. The higher level of LDL you have, the more you have of having a heart attack. HDL means high-density lipoprotein. By having high levels of HDL, it reduces the risk of having a heart attack.

How do LDL and HDL differ structurally and functionally?

50 percent of the weight of an LDL particle is cholesterol and 25 percent is protein. In HDL, 50 percent of the weight is protein and 20 percent in cholesterol. LDL has B-100 proteins, while HDL contain A-I and A-II proteins. Both of these types of lipoproteins transport cholesterol, but the main difference between the two is than they deliver the cholesterol to different parts of the body. LDL takes the cholesterol to the cells in the body. The function of HDL is to remove cholesterol from where it doesn't belong and take it to the liver.

Why doctors monitor the concentrations of LDL and HDL in a patient's blood  

When you to the doctors for a check up, they might check the concentration of LDL and HDL in your blood. They do this to evaluate your overall health and see if you are at risk of cardiovascular disease.

How are concentrations of LDL and HDL associated with the risk of heart disease?

By having high levels of LDL, it makes you have more of a chance of having a stroke or a heart attack because the high amount can cause a blockage in the heart or blood vessels and cause a stroke or a heart attack. If the levels of HDL are low it can also cause you have a change of having a stroke or heart attack since the you don't have the right amount of HDL removing LDL from the blood.

What molecules are monitored along with LDL and HDL?

VLDL stands for very low-density lipoprotein. This molecule has little protein in it and distributes triglyceride that is produced by the liver. Having a high level of VLDL can also lead to buildup of cholesterol in the arteries and lead to heart disease. Triglycerides are monitored along with LDL. They are a type of fat the body uses to store its energy and give energy to the muscles. If have a high triglyceride level along with high LDL levels can cause you have a heart disease.

Meaning of test results of cholesterol

If you have high levels of cholesterol it means that you are at high risk for heart disease.

How to change the levels of HDL and LDL in your blood

You can change the levels of HDL and LDL in your blood by eating healthier foods and exercising. Regular physical activity can help lower LDL levels. There are foods that can make raise your levels of HDL.

How intake of fats affect cholesterol levels and overall health

We all needs fats but only to a certain extent. If you eat foods that have high amounts of saturated fats and cholesterol, it will cause your cholesterol levels to go up and affect your health. Saturated fats are not good to eat high amounts of for anyone. By eating things that have a lot of saturated fats in them causes people to have some sort of heart disease.

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