Explanation of cholesterol (HDL, LDL, Triglycerides)

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Creative Commons License
Sunday, March 02, 2008 at 08:11 AM

My last blood test gave me very similar testresults.

This is an explanation I found on a different website - dated 2002.

Hope Allan does not mind me sharing his info.


HLDL cholesterol can be broken down into two kinds, pattern A and pattern B. LDL pattern A is large fluffy particles that are less dense than pattern B and not easily oxidized. LDL pattern A is essentially benign with respect to heart disease. LDL pattern B on the other hand is small dense particles that are easily oxidized and more closely associated with heart disease. It has been theorized that the harm to the arteries is associated with oxidized cholesterol. Ok, enough about that. To summarize, LDL pattern B (think small dense BBs) is bad, LDL pattern A (light and fluffy) is not a problem.

Now you would think that the lab actually measured your LDL, but they likely didn't. Most labs just calculate LDL from the following equation: LDL = Total Cholesterol - HDL - triglycerides/5. So from this, you don't know if you are predominately LDL pattern A (no big deal) or predominately LDL pattern B (much more risk). Some labs do have the capability to measure the LDL gradient and can determine your predominate LDL pattern type. However, there is another way. Studies have shown that there is a strong correlation between a low triglyceride/high HDL level and LDL pattern A (the non risky kind), and conversely, a high triglyceride/low HDL level is strongly associated with LDL pattern B (the harmful kind). This is one reason that high triglycerides alone are an independent risk factor for heart diease.

Ok, where am I going with this with respect to your situation. Other studies have shown that a high triglyceride/HDL ratio is the best indicator for heart disease risk (approximately 8x better at predicting heart disease risk than high total cholesterol alone). A triglyeride/HDL ratio of 5.0 is moderate risk and the higher the number, the higher the risk, while a ratio of < 2.0 is very low risk.

From what I have just described, you can see that with your very low triglyceride level (<100) and moderately high HDL level (>50) you are at very low risk of heart disease. Also, your very low triglyceride level indicates that your LDL is predominately pattern A, the harmless kind. If you are still concerned, you can have your LDL gradient measured to determine your LDL pattern type.

I wouldn't even remotely consider cholesterol lowering medications without knowing your LDL pattern type to see if there is any risk associated with your lipid levels because there are potential significant side effects (muscle damage, neurological damage, liver damage, even death - i.e. the Baycol recall) associated with many cholesterol lowering medications (statins in particular).

Oh, and I think that your low sugar, lower carbohydrate diet is the way to go to lower your risk of heart disease because of the positive effects it has on triglycerides and HDL.


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