Kardea

Sunday, May 31, 2009

Strategies to Increase Good HDL Cholesterol

When it comes to cholesterol, most people think lower is better. But when we're talking about the cholesterol in our blood, it's a bit more complicated.

Low-density lipoprotein, or LDL, is known as the "bad" cholesterol and high-density lipoprotein, or HDL, is known as the "good" cholesterol. LDL optimally should be less than 100 mg/dL (milligrams per deciliter)---above this level, some amount of arterial plaque (the stuff that causes blocks in the arteries that can lead to heart attacks and stroke) is likely to develop. You and your doctor may or may not seek to lower your cholesterol levels if they are higher. This depends on a variety of risk factors. To assess your maximum LDL targets, click to the Kardea LDL Cholesterol Calculator based on the recommendations of the National Cholesterol Education Program. And if you are at high risk of heart disease, you and your doctor may seek to drive your cholesterol below 70mg/dL.

HDL cholesterol removes excess cholesterol from the blood, which slows the build-up in the arteries and ultimately lowers heart disease risk. Since estrogen increases HDL, women tend to have higher levels than men. Women should strive for an HDL above 50 mg/dL and men above 40 mg/dL. While genetics plays a role in your HDL level, there are some things you can do to modestly boost a sagging HDL:
  • Lose weight if you're overweight. Exercising and cutting a few calories can give HDL a little boost, especially if you carry most of your excess weight in your abdomen.
  • Quit smoking. Smoking, as well as secondhand smoke, can lower HDL.
  • Recognize that different types of fats affect your HDL levels. Healthy fat choices such as omega-3s found in fish and monounsaturated fats found in olive oil and canola oil, nuts, seeds and avocados should be used---replacing the satured and trans fats found in processed foods, certain meats and dairy products.
    • Alcohol can raise HDL. If you can safely fit alcohol into your eating plan, keep it moderate -- no more than one drink a day for women and two drinks for men.

Also, you can consider the use of niacin as nicotinic acid. Available as both a supplement and a prescription medication, this form of niacin can significantly raise your HDLs. For an overview on niacin, read Kardea's discussion paper. And remember, in developing a program that optimizes your heart health and cholesterol profiles, it is best to collaborate with your health care professionals.

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Thursday, May 28, 2009

Looking Beyond Lowering LDL Cholesterol

The risk of developing cardiovascular diseases is typically assessed based on a standard cholesterol test measuring LDL (low-density lipoprotein) and HDL (high-density lipoprotein) levels and then factoring advanced age, gender, family history of heart disease, high blood pressure, diabetes, and smoking. Taking these factors into account, LDL lowering targets can then be established, and a program of therapeutic changes in lifestyle and nutrition can be established. If these changes are unable to bring cholesterol levels in line, medications are routinely provided.

However, studies indicate that these risk factors can account for only a portion, perhaps 50%, of the incidence of coronary artery disease. The scientific community has continued its investigations, and is finding that a number of other risk factors can be identified through blood test. On its website, Berkeley Health Lab, a leading medical lab with an integrated program for cardiovascular treatment, identifies many of these important factors including:

Size of LDL Particles: Some LDLs Are Worse Than Others
  • Small LDL particles can cause plaque build up to progress much faster because they can enter the artery wall easier than large LDL particles
  • Too many small LDL particles can increase your risk for a heart attack beyond any other risk factors you may have, such as smoking, high blood pressure, diabetes, etc.
  • Certain medications, proper nutrition, and regular exercise can help your body produce fewer small LDL particles

Size of HDL Particles: Some HDLS Are Better Than Others

  • HDL helps to protect against progression of plaque build-up in the artery wall
  • HDL2b is the workhorse of all of the HDL particle types. It has the ability to pick up and remove cholesterol
  • Certain medications, improved nutrition, loss of body fat, stopping tobacco use, and increased physical activity are some ways that HDL-C and HDL2b can be improved
Apolipoprotein B: Accurate LDL Particle Number
  • ApoB is a direct measurement of the amount of LDL ("bad" cholesterol) particles
  • A high apoB number indicates increased risk for heart disease
  • Improved eating habits, increased physical activity, and loss of body fat are some lifestyle changes that improve apoB
  • Your physician uses apoB to determine if certain medications are needed and to monitor their effectiveness


C-Reactive Protein-hs (CRP)

  • High levels of CRP indicate inflammation within the body due to infection or tissue injury; it can also predict heart disease risk levels
    Certain medications may help reduce this risk
    Certain foods have anti-inflammatory benefits
ApoE Genotype
  • ApoE is a genetic test that plays a role in helping to identify how people respond to different amounts of dietary fat. Your body's response to dietary fat impacts the formation of small or large LDL particles
  • There are 3 types of apoE genotypes: apoE2, apoE3 and apoE4
  • People with an apoE4 have a greater risk for heart disease
  • ApoE can be used to help guide the right nutrition plan for you
Other risk factors measurable through blood tests also are discussed on this site.

Overall, most of us typically receive the standard test for cholesterol, with these more thorough tests reserved for those individuals at high risk. Yet, for those of us interested in the information needed to optimize our long term health, this more complete assessment can be very useful. Check with you healthcare provider about obtaining these more extensive blood test to better direct your unique course for optimizing your health.

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