Is an HDL of 20 good?
An HDL of 20 mg/dL (0.5 mmol/L) is low by the NCHS line of 40. Low HDL is a warning sign, but HDL is a marker, not a target: drugs that raised it didn't cut heart events on top of a statin. Your LDL and non-HDL are the numbers with goals.
What it means
HDL particles carry cholesterol away from the artery wall, and a low number goes with higher risk. But in trials, drugs that pushed HDL up didn't cut heart events on top of a statin, so the guideline treats HDL as a sign, not a target. In the US, 21.5% of men and 6.6% of women have an HDL under 40 (NCHS, 2021 to 2023).
What moves it most
Walk, cycle or swimAt least 120 minutes a week raised HDL about 2.5 mg/dL across 25 trials.
Look at LDL and non-HDLDon't chase HDL with pills. The goals are set for the other two.Your whole panel
One number is half the story. Put in the rest and see your LDL and non-HDL against the goal for your risk.
When to get help now
Chest pain or pressure isn't a cholesterol question: call 911. Triglycerides of 500 or more need a doctor within days, 1000 or more the same week, and severe stomach pain with them is the ER. Cholesterol rises in pregnancy on purpose, so take any number to your midwife or doctor. If you take a cholesterol medicine, your goal comes from your prescriber.
