HDL Cholesterol

Also written HDL-C

CardiovascularMeasured in mg/dL

What it measures

Cholesterol carried in high-density lipoprotein particles.

Why it matters

It remains useful as a marker of metabolic health and as a component of risk calculators, even though it has failed as a treatment target.

Where the claimed ranges actually sit

Measured in mg/dL. Each row is one claim about where your result should fall.

What a laboratory reportsWhat a seller markets as “optimal”

Laboratory reference range> 40 mg/dL

Standard lipid panel reference categories

Above 60 mg/dL treated as protectiveC> 60 mg/dL

Consumer panels and supplement marketing

›View as table

Claim	Range	Source
Laboratory reference range	> 40 mg/dL	Standard lipid panel reference categories
Above 60 mg/dL treated as protective	> 60 mg/dL	Consumer panels and supplement marketing

Where the sources disagree

This is the registry's cleanest example of the difference between a marker and a lever. HDL-C predicts risk; raising it does not reduce risk. Any product that sells you an intervention to raise HDL-C is selling a change in a number rather than a change in your outcome. The word 'optimal' does a great deal of concealed work here.

The marketed ranges, examined

Each claim gets its strongest possible case before it gets its criticism. Several of these are substantially correct.

Above 60 mg/dL treated as protective

Promoted by consumer panels and supplement marketing

CConfounded

The strongest case for it

Low HDL-C is a robust observational marker of elevated cardiovascular risk and reliably tracks with metabolic dysfunction.

What it leaves out

Every major trial that successfully raised HDL-C pharmacologically failed to reduce cardiovascular events, and Mendelian randomization does not support causality. Very high HDL-C has been associated with worse outcomes in several cohorts. Treating HDL as a number to maximize is one of the clearest cases in this registry where a marker is a passenger rather than a driver.

Before you act on your result

Interpret as a risk marker, not a treatment target.
Unusually high values are not necessarily favorable.
The triglyceride-to-HDL ratio carries more metabolic information than HDL alone.

Last reviewed July 28, 2026How we grade evidence and attribute claims →

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