Preventive health
47.7% of U.S. Adults Have Hypertension. Should You Know Your Number?
High blood pressure can be quiet for years. It is measured with a cuff, not a routine blood test — and almost half of U.S. adults meet the definition.
Healiam·October 18, 2026·2 min read
High blood pressure can exist quietly for years. You may feel fine, exercise, eat reasonably well, and have no obvious symptoms. Your blood pressure can still be higher than it should be.
In National Health and Nutrition Examination Survey data from August 2021 through August 2023, 47.7% of U.S. adults aged 18 and older had hypertension. That is nearly one in two adults.
23.4%
Adults aged 18–39 with hypertension
52.5%
Adults aged 40–59 with hypertension
71.6%
Adults 60 and older with hypertension
What hypertension means here
In that CDC/NCHS report, hypertension was a systolic pressure of 130 mm Hg or higher, a diastolic pressure of 80 mm Hg or higher, or current use of blood-pressure medication.
Systolic pressure is the pressure when the heart contracts. Diastolic pressure is the pressure when the heart relaxes between beats. Hypertension is not diagnosed from a routine blood test. Blood pressure has to be measured. The U.S. Preventive Services Task Force recommends screening adults in the office and confirming a diagnosis with measurements outside the clinic before treatment starts.
Why feeling fine isn’t enough
High blood pressure is an important risk factor for cardiovascular disease. Among U.S. adults who had hypertension, only 59.2% were aware that they had it. Roughly four in ten people with hypertension did not know.
A blood test can describe cholesterol, blood sugar, kidney function, and other markers. A blood-pressure reading tells you something else. You need both. Healiam visits include a place to record systolic and diastolic pressure alongside the lab panel, so the numbers can sit on the same timeline.
What did my blood test say? And what is my blood pressure?
Your body doesn’t always send a notification when something changes. Know the numbers, know what they mean, and when something is outside the expected range, discuss it with a qualified clinician rather than diagnosing yourself.
Sources
- CDC/NCHS — Hypertension Prevalence, Awareness, Treatment, and Control Among Adults Age 18 and Older: United States, August 2021–August 2023
- USPSTF — Hypertension in Adults: Screening
This article is for educational purposes and does not provide medical advice, diagnosis, or treatment. Results should be interpreted in the context of your individual health and, when appropriate, discussed with a licensed healthcare professional. Healiam testing and result delivery do not replace professional medical advice, diagnosis, or treatment.