It’s important for your body to have a healthy amount of
cholesterol in order to work properly. You need cholesterol to make hormones, vitamin D, and bile acids that help to digest fat. When getting your cholesterol checked, there are several types of cholesterol your doctor may measure. These include: HDL level, LDL level and triglycerides. Below is an explanation of what these are and how to read your lab results.
In order for cholesterol to travel in your blood, it needs to attach to a protein and is therefore called a lipoprotein. Lipoproteins can be high density (HDL), low density (LDL) or very low density (VLDL). This is dependent upon how much protein there is in relationship to fat.
High density lipoproteins (HDL): HDL cholesterol is also known as “good” cholesterol. It is known to help remove excess cholesterol from your body and brings it to your liver for degradation. The higher your HDL the better.
Low density lipoproteins (LDL): LDL cholesterol has also been called “bad” cholesterol. High levels have been highly associated with atherosclerosis and increased risk of heart disease and stroke. However, it’s not quite that cut and dry. Robert H. Lustig, MD, UCSF Professor of Pediatrics in the Division of Endocrinology (Sugar: The Bitter Truth on you tube) explains that there are two types of LDL cholesterol, pattern A (large buoyant) and pattern B (small dense). Pattern A LDL are light and buoyant. They float as they get carried through the blood stream and don’t have a chance to form plaques. Pattern A LDL comes from dietary fat. Pattern B (small dense LDL) don’t float, therefore they do get under the edge of the endothelial cell and start plaque formation. Pattern B LDL comes from carbohydrates (sugar).
Since blood tests don’t individually measure Pattern A and Pattern B LDL levels, you need to look at your triglyceride to HDL ratio to know how much of each you have. Ideally, you want your triglycerides to be low, and HDL to be high. It’s best to have a ratio below 2 (divide you triglycerides by your HDL).
Triglycerides: Triglycerides are the main form of fat in the body and source of energy. When we eat a meal, any excess that is not used as energy is stored in the form of triglycerides in adipose (fat) cells. You want this number to be low (see above).
I hope this information helps to understand your lab values when you talk with your doctor. Feel free to contact us for more information on how diet, exercise and lifestyle affect your cholesterol and health.
Our workshop, “You Are What You Eat” on June 26th (see event page for more info) is a great place to start.
In Health,
Dorothy Lizak
Nutrition & Wellness Specialist
References:
http://www.youtube.com/watch?v=dBnniua6-oM&feature=email
http://www.webmd.com/cholesterol-management/triglycerides-lowering-triglyceride-levels
http://cholesterol.about.com/cs/cholesteroltypes/a/lipotypes.htm
Photo: Thank you to: http://www.bakeridi.edu.au/Assets/Images/9.jpg



