The metabolic syndrome criteria are five common measurements used together to identify elevated cardiometabolic risk. This guide explains the usual U.S. thresholds, what they mean, and when to discuss the results with a healthcare professional.
Written and edited by: Denny Jaeyong Choi (JD), INSEAD MBA
Professional affiliations are provided for identification only and do not imply employer endorsement of this article.
Metabolic syndrome is not one single disease. It is a combination of cardiometabolic risk factors that tend to occur together and can raise the risk of heart disease, stroke, and type 2 diabetes.
Metabolic syndrome criteria: quick answer
In the commonly used adult definition, metabolic syndrome is present when a person has at least three of five risk factors: a large waist circumference, elevated triglycerides, low HDL cholesterol, elevated blood pressure, or elevated fasting glucose. A diagnosis should be made by a qualified healthcare professional because thresholds and treatment decisions can vary by guideline, sex, ancestry, medical history, and medication use.
The 5 metabolic syndrome criteria
The following cutoffs are commonly used in U.S. patient education materials from the American Heart Association and the National Heart, Lung, and Blood Institute. They are a screening framework, not a substitute for a clinical assessment.
| Risk factor | Common threshold | What it represents |
|---|---|---|
| Waist circumference | More than 40 in (102 cm) in men or 35 in (88 cm) in women | Abdominal fat and related metabolic risk |
| Triglycerides | 150 mg/dL or higher, or treatment for high triglycerides | A type of fat in the blood |
| HDL cholesterol | Below 40 mg/dL in men or 50 mg/dL in women, or treatment for low HDL | Lower protective HDL cholesterol |
| Blood pressure | 130/85 mm Hg or higher, or treatment for hypertension | Persistent pressure-related cardiovascular risk |
| Fasting glucose | 100 mg/dL or higher, or treatment for elevated glucose | Impaired glucose regulation |
Having any three of the five factors meets the usual definition. Having only one or two does not mean the findings are unimportant; they still deserve attention and follow-up.
Why does metabolic syndrome matter?
The cluster is useful because the combined pattern can signal higher long-term cardiometabolic risk than any single measurement alone. The National Institute of Diabetes and Digestive and Kidney Diseases describes metabolic syndrome as a group of conditions that increases the risk of heart disease, diabetes, and stroke.
Many of the component conditions have no obvious symptoms. A person may feel well while blood pressure, fasting glucose, triglycerides, or HDL cholesterol are outside the preferred range. That is why routine measurements and laboratory testing can be more informative than symptoms alone.
What should you do if you meet 3 criteria?
- Confirm the measurements. Ask how the waist was measured and whether blood pressure was taken correctly and repeated when appropriate.
- Review the full picture. A clinician may consider your medications, family history, sleep, physical activity, diet, smoking status, kidney health, and other risk factors.
- Make a practical plan. Depending on your results, the plan may include nutrition and activity changes, weight management support, blood pressure or lipid treatment, or evaluation for abnormal glucose.
- Track changes over time. Trends can be more useful than a single reading. Keep a record of home readings or laboratory results if your healthcare professional recommends it.
Important limitations of the 5-criterion checklist
Waist cutoffs are not universal. Thresholds can differ by ancestry and region, and clinicians may use other measurements when appropriate. A fasting glucose result is also not the same as a diagnosis of diabetes. Do not start, stop, or change medication based only on a checklist or online article.
Bottom line
Metabolic syndrome means that at least three commonly measured risk factors are present together. The checklist can help you prepare for a conversation with a healthcare professional, but the next step is confirmation and an individualized risk-reduction plan.
Sources
- National Heart, Lung, and Blood Institute (NHLBI): Metabolic Syndrome Diagnosis
- American Heart Association: Symptoms and Diagnosis of Metabolic Syndrome
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK): Health Risks of Overweight and Obesity
Written and edited by: Denny Jaeyong Choi (JD), INSEAD MBA.
Published: September 3, 2026
Last updated: September 7, 2026