An elevated HDL (>80mg/dl) may not be harmful, but it's probably not any more protective than an HDL in the 60 to 80 range. High HDL can be genetic, in which case it's benign and there's nothing that needs to be done about it. Sometimes taking too much niacin, fish oil, or certain statins may elevated HDL out of the normal range, in which case you can adjust your meds. The potential caveat to high HDL is that it can be secondary to conditions such as hyperthyroidism, biliary cirrhosis, and alcoholism without cirrhosis. If you're healthy, and you have normal TSH and liver enzyme levels, don't worry about high HDL. Ref: the Merck Manual On-line http://www.merck.com/mmpe/sec12/ch159/ch159b.html
HDL cholesterol levels are a rough measure of HDL particle quantity in the blood. They actually tell us next to nothing about HDL particle type, although HDL cholesterol increases are usually associated with increases in LDL particle size. This a good thing, since small-dense LDL particles are associated with increased cardiovascular disease.
Most studies suggest that a level of about 60 mg/dl (1.55 mmol/l) is close to optimal for most people on the Standard American Diet (SAD), and that HDL's protective effect plateaus after 60 mg/dl (1.55 mmol/l). For more details:
My total cholesterol was lab tested at 266 with HDL of 127. HDL is usually 110. Now I am worried that it is too high. My doc thinks its great.
I was told that with me it is hereditary stemming from a fishing village in Italy where my origins are. The way i discovered this i my previous doc did studies on HDL and isolated the village, and it coincides with my ancestry, so how about that?
My LDL is in the 40's but my HDL is at 107. This made me a it nervous, but makes me feel better reading the above. It has never been that high, but this is the first time I have checked it since beginning paleo earlier this year.