Cholesterol & Heart Health

What does low HDL cholesterol mean?

The short answer

HDL cholesterol (high-density lipoprotein) is the 'good' cholesterol: it picks up extra cholesterol in the blood and carries it to the liver. A low HDL, below 40 mg/dL in men or below 50 mg/dL in women, is linked to higher heart disease risk and often comes with excess weight, inactivity, smoking or insulin resistance. An HDL of 60 mg/dL or above counts in your favour.

Also called: high-density lipoprotein, HDL-C, good cholesterol · Updated 3 November 2026 · Sources listed below

What HDL measures

HDL (high-density lipoprotein) picks up extra cholesterol in your blood and delivers it to your liver for removal. It also helps combat inflammation and plays a role in preventing blood clots (Cleveland Clinic), which is why it is called 'good' cholesterol.

The US ATP III guideline counts a low HDL as a major heart risk factor in its own right, and a low HDL with high triglycerides is part of the pattern doctors call the metabolic syndrome.

HDL ranges

These figures come from the NCEP ATP III guideline (NIH), MedlinePlus and Cleveland Clinic.

ResultRange
Low (men)Below 40 mg/dL
Low (women)Below 50 mg/dL
Normal (Cleveland Clinic)40 to 80 mg/dL (men), 50 to 80 mg/dL (women)
Best (MedlinePlus), counts in your favour (ATP III)60 mg/dL or above
Abnormally high (Cleveland Clinic)Can point to an underlying lipid disorderAbove 80 mg/dL
Healthy, age 19 or younger (MedlinePlus)Above 45 mg/dL

ATP III uses below 40 mg/dL as its risk-factor cut-off for everyone, while MedlinePlus and Cleveland Clinic use below 50 mg/dL for women. Reference ranges vary between laboratories, and the range printed on your own report takes priority. Ranges vary between laboratories, and the range printed on your own report takes priority.

What a high HDL result means

An HDL of 60 mg/dL or above is generally a good sign: MedlinePlus calls it best, and ATP III counts it in your favour. Higher is not always better, though. Cleveland Clinic notes that HDL above 80 mg/dL can point to an underlying lipid disorder, and testing.com says that in these less common cases a high HDL is not necessarily beneficial.

A 2022 study by Emory University researchers in JAMA Cardiology followed about 20,000 people with coronary artery disease. Compared with HDL of 40 to 60 mg/dL, HDL above 80 mg/dL was linked with a higher risk of death from any cause, close to double in one of the two cohorts. The study was observational and limited to people with heart disease, but it adds to the evidence that a very high HDL is not automatically protective.

Common causes

What a low HDL result means

A low HDL is linked with higher heart disease risk. ATP III counts below 40 mg/dL as a major risk factor, and below 40 mg/dL in men or 50 mg/dL in women is one of the five features of the metabolic syndrome, alongside raised triglycerides, a large waist, raised blood pressure and raised fasting glucose. Low HDL often reflects excess weight, inactivity, smoking or insulin resistance, so look at those together.

Common causes

What moves HDL

Nutrition

Eat a heart-healthy diet (Cleveland Clinic), with less saturated fat and more fibre and unsaturated fats. If you carry excess weight, ATP III makes weight management a first step for low HDL.

Training

Increase physical activity: ATP III pairs it with weight management as the first treatment for low HDL, and Cleveland Clinic suggests 30 minutes of aerobic exercise a day. Build up gradually and keep it regular.

Sleep and stress

Cleveland Clinic advises managing stress, which can lower HDL and raise LDL. Sleep matters through the same eating and activity habits.

Habits

Stop smoking: tobacco lowers HDL, especially in women (MedlinePlus; Cleveland Clinic). Do not drink alcohol to raise HDL; heavy drinking is a cause of abnormally high HDL, not a route to better heart health.

How fast HDL can change

HDL moves with sustained changes in weight, activity and smoking, over months rather than weeks. ATP III reviews lifestyle change after about 3 months, so a Day 90 re-test is a fair first checkpoint. Eating beforehand does not affect the accuracy of HDL (testing.com), but infection, inflammation and some medicines can lower it temporarily, so the direction across tests tells you more than one number.

Before your test

When to speak to your doctor

Speak to your doctor if your HDL is below the range on your report, especially alongside high triglycerides, high LDL, high blood pressure, a large waist or a raised HbA1c, or if early heart disease runs in your family. Mention an HDL above 80 mg/dL too, as it can point to a lipid disorder, a thyroid or liver condition, a medicine effect or heavy drinking. Neither result is an emergency on its own.

On the Wolfburgh panel

HDL Cholesterol is one of the 17 markers on the Wolfburgh blood panel. Your sample is collected at home with RedDrop One, an FDA-cleared collection device, and a licensed physician reviews every panel before your care team sees it.

The Trainer and Nutritionist work on activity, diet and weight and the Behaviour Specialist on smoking, alcohol and consistency, while the Partner Physician reads HDL against triglycerides, LDL and HbA1c on the same report. HDL also feeds the three cholesterol ratios on the report, so a change in HDL moves all of them. Members re-test at Day 90, backed by the 90-Day Results Guarantee.

Common questions about HDL

What is a good HDL cholesterol level?

US sources call HDL low below 40 mg/dL in men and below 50 mg/dL in women. MedlinePlus calls 60 mg/dL or above best, and the ATP III guideline counts it as a factor in your favour. Cleveland Clinic gives 40 to 80 mg/dL for men and 50 to 80 mg/dL for women as normal. The range printed on your own lab report takes priority.

How can I raise my HDL cholesterol?

The main levers are more physical activity, losing excess weight and stopping smoking, which lowers HDL. ATP III makes weight management and activity the first steps, and Cleveland Clinic adds heart-healthy eating and stress management. Expect change over months, not weeks. Do not drink to raise HDL: heavy drinking causes abnormally high HDL, not better heart health.

Can HDL cholesterol be too high?

Yes. Cleveland Clinic notes that HDL above 80 mg/dL can point to an underlying lipid disorder, with causes including heavy drinking, an overactive thyroid, some liver conditions, medicines and inherited gene changes. A 2022 JAMA Cardiology study of people with coronary artery disease linked HDL above 80 mg/dL with higher mortality. Very high HDL is not automatically protective.

Does high HDL cancel out high LDL?

No. In the US ATP III guideline, an HDL of 60 mg/dL or above removes one risk factor from the risk count, but the LDL goal still applies. Doctors judge LDL, HDL, triglycerides, blood pressure, smoking, diabetes, age and family history together. A good HDL helps, but it does not make a high LDL safe.

Sources

  1. National Heart, Lung, and Blood Institute (NIH). ATP III Guidelines At-A-Glance Quick Desk Reference
  2. MedlinePlus (NIH). Cholesterol Levels
  3. Cleveland Clinic. HDL Cholesterol
  4. Cleveland Clinic. LDL Cholesterol
  5. testing.com. HDL Cholesterol test
  6. JAMA Cardiology (Liu et al., 2022). Association Between High-Density Lipoprotein Cholesterol Levels and Adverse Cardiovascular Outcomes in High-risk Populations

This page is general information, not medical advice, and it does not replace a consultation with your own doctor. Never start, stop or change a medicine or supplement because of something you read here.

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