FB-TW

Showing posts with label Berkeley HeartLabs. Show all posts
Showing posts with label Berkeley HeartLabs. Show all posts

Saturday, March 9, 2013

Shocking Cholesterol News - Suzy Cohen

Shocking Cholesterol News

Suzy-Cohen-1-150x111Dear Pharmacist,
I saw Dr. Oz interview a doctor on television about cholesterol. The guest said your total cholesterol doesn’t matter and I read that in your book 6 years ago. Suzy, I take a statin, and do a “Lipid Profile” annually. Is this okay? –M.D., Austin, Texas

Answer: No, it’s not okay, and I’m about to shock everyone, unless you’ve read my books, then this will be review.

Recently I wrote a column about LDL and that we should not necessarily strive to lower it. We need to know the type and number of LDL particles. For example, Lipoprotein A  or “Lp(a)” and another called apolipoprotein B or “Apo B” are two subtypes of LDL particles. These particular scores directly affect your cardiovascular risk. Do you have those numbers on your lab test? I bet you don’t.

In my first book, The 24-Hour Pharmacist from 2007 and many syndicated columns I’ve explained that statins are not very effective in reducing LDL particle number or Apo B and usually do not increase the size of your LDL particles, that’s why I don’t encourage them.

It’s confusing for consumers (and physicians who unwittingly accept drug propaganda) because studies conclude statins reduce total LDL. And yes, they do reduce “total” LDL, they are also excellent anti-inflammatories so they are not completely without merit. But I’m bent on you reducing Lp(a) and Apo B, the dangerous subtypes of LDL known to raise risk for heart attack and stroke.  One day I’ll tell you which vitamin reduces those bad boys, since drugs can’t, but now, back to this testing dilemma.

I’ll never submit myself for a routine “Lipid Profile” because it would waste my money. Half the people who have heart attacks have normal total cholesterol. If your results shows a low LDL (considered the bad particle), then you may assume you’re okay but you see, a low total LDL score doesn’t say much. Your triglycerides might be through the roof! You may have a huge concentration of dangerous Lp(a) and Apo B, subtypes of LDL that are never measured in that basic lipid profile.

Likewise, you may be happy with your high HDL cholesterol score, (HDL is considered a good cholesterol), but what if you have the wrong kind of HDL particles? Yeah, some HDL is bad, you didn’t know that?!  You’re still at very high risk.  These basic “Lipid Profiles” don’t provide the crucial details. It’s like a car mechanic who you hire to fix your engine, but you only let him look at the hood of your car, he can’t open the hood to see inside!

The better tests, sometimes covered by insurance measure particle size, type and sometimes the actual number of LDL and HDL particles. I urge you to ask your physician to order tests from Berkeley HeartLab, a leader in this field. There’s also another one called the “VAP Test” by Atherotec Diagnostics and finally, the “NMR Lipoprofile” by LipoScience.
==========================================================

Tuesday, August 21, 2012

Ask Your Doctor for a Complete Lipid Evaluation - Watson

Ask Your Doctor for a Complete Lipid Evaluation Sent Saturday, March 10, 2012

Diet Heart News, volume 2, number 3
Heart disease is the #1 cause of death. About 50 percent of people who die suddenly from heart disease have low or normal cholesterol. To protect yourself from heart disease, ask your doctor for a complete lipid evaluation. Fast 10-12 hours before blood is drawn (you can drink water). Because Total Cholesterol (TC) and LDL cholesterol are not the most reliable predictors of heart disease, they are not posted in the following chart.
QUICK SUMMARY: Focus on Fasting Glucose, HDL, Triglycerides (TG) and the all important TG:HDL ratio. Keep in mind that before the advent of cholesterol-lowering statin drugs, the normal range for Total Cholesterol (TC) was: 180 mg/dl to 340 mg/dl. Also, it's important to note that LDL is actually a family of particles. A discussion about LDL subclasses and LDL subclass testing follows in the summary of this article.

1. C-reactive protein (CRP) is produced by the liver in response to inflammation in the body. If monitored early enough, elevated CRP can be an early warning of a heart attack several years in advance. Optimum levels are below 1 mg/l. (You will have to request this test with most doctors.)

2. Fasting Glucose (FG) measures fasting blood sugar. Lowest all-cause mortality is associated with fasting glucose in the range of 80-89 mg/dl. According to the clinical experience of Dr. Robert Atkins, the risk of heart disease increases in linear manner as your Fasting Glucose goes over 100 mg/dl. (Specifically ask for this inexpensive test.)

3. Fibrinogen is a protein that in excess promotes blood clots. Elevated fibrinogen = thicker blood. Thicker blood flows less easily through partially blocked arteries. Consistent elevated fibrinogen (over 350 mg/dl) conveys a 250 percent increased risk of heart disease compared to people with fibrinogen levels below 235. (People who have recently suffered a heart attack will have elevated fibrinogen levels.)

4. Homocysteine is normally rapidly cleared from the bloodstream. Elevated homocysteine is a result of B-vitamin deficiencies, particularly folic acid, B-6 and B-12. Elevated homocysteine is associated with increased risk of heart attack, stroke, and all cause mortality. Levels less than 8 mmol/L are associated with longevity. (Again, you may have to request this test.)

5. Lipoprotein(a) has been called the "heart attack cholesterol." Lipoprotein(a) is a sticky protein that attaches to LDL and accumulates rapidly at the site of arterial lesions or ruptured plaque. Readings of 30 mg/dl or more indicate serious increased risk of heart disease, especially in the presence of elevated fibrinogen (>350). While the Lp(a) level is largely genetically determined, it can be influenced by nutritional factors, such as high blood sugar and trans fatty acid consumption. (This test may not be as important as the rest and is seldom done routinely.)

6. HDL is made in the liver and acts as a cholesterol mop, scavenging loose cholesterol and transporting it back to the liver for recycling. HDL is associated with protection from heart disease. You want as much HDL as possible. HDL of 60 or more is associated with protection for men--70 or more for women.

7. Triglycerides (TG) should be under 100 mg/dl. Triglycerides are blood fats made in the liver from excess energy - especially carbohydrates. Risk is linear--the higher the number, the greater the risk, especially for women. While doctors may insist that a reading up to 150 is okay, Dr. Atkins' clinical experience suggested otherwise.

8. TG:HDL ratio is the most reliable predictor of heart disease. Calculate your ratio by dividing TG by HDL. As an example, if TG = 80 and HDL = 80, your ratio is 1:1 representing low risk of heart disease. If your TG = 200 and your HDL = 50, your ratio is 4:1 representing serious risk of heart disease.

9. VLDL - Increasingly, Very Low Density Lipoprotein is measured/calculated. VLDL is sent out from the liver to deliver those liver made fats (Triglycerides) - as opposed to a Chylomicron that delivers dietary fat from the gut. Generally, VLDL is one fifth of your triglyceride level, although this is less accurate if your triglyceride level is greater than 400 mg/dl. (Beyond the scope of this article, LDL is the offspring of VLDL - they are closely-related.)

LDL particle size: Small dense Pattern B/Large fluffy Pattern A
LDL - low density lipoprotein - is a family of particles. A lot of people with elevated LDL do not develop coronary artery disease, while individuals with low or modest levels often develop serious disease. This can be explained by the LDL particle number and size. Routine cholesterol testing only reveals the amount of LDL; not the quality of LDL.
We now know (my doctor didn't) that there are different subclasses of LDL (and HDL). Under an electron microscope, some LDL particles appear large and fluffy; others small and dense. The big, fluffy particles are benign, while the small dense particles are strongly associated with increased risk of heart disease.

In excess, small dense LDL is toxic to the artery lining (the endothelium), and much more likely to enter the vessel wall - become oxidized - and trigger atherosclerosis. It's becoming consensus medical opinion that only oxidized LDL can enter the macrophages in the lining of the arteries and contribute to plaque buildup.

How Do You Know What Size LDL You Have?
Certain clinical factors predict the presence of small dense LDL. These markers include HDL below 40 in men; below 50 in women - and Triglycerides (TG) higher than 120 mg/dl. Diabetes or pre-diabetes also predicts small dense LDL (Pattern B).
To determine LDL particle size, ask your doctor for a VAP (Vertical Auto Profile) test, which separates lipoprotein particles using a high speed centrifuge. The VAP test measures the basic information provided by a routine cholesterol test, but also identifies lipoprotein subclasses, LDL and HDL. (Go to http://thevaptest.com for more information.)

There are other tests as well. The NMR LipoProfile analyzes the number and size of lipoprotein particles by measuring their magnetic properties (http://theparticletest.com). Also Berkeley HeartLab's LDL Segmented Gradient Gel Electrophoresis test measures all seven subclasses of LDL. (http://bhlinc.com).

If you don't have insurance, request the inexpensive fasting glucose test. Any number over 100 - over 95 according to the late Dr. Atkins - is an early warning of diabetes, metabolic syndrome, and heart disease. If you have insurance or can afford a complete lipid panel, consider additional testing to determine the size and number of LDL particles. Remember, "A stitch in time saves nine."
=============================================================
Read the full article here.