High blood pressure: the problem that almost never has symptoms
Which numbers count as high blood pressure, why almost nobody feels it, how often to check it and how it is managed with your family doctor.
Nearly half of adults in the United States have high blood pressure, and many do not know it. It is not that they are not paying attention: high blood pressure almost never gives a warning. That is why it is worth understanding what it is, how it is found and what can be done about it.
How common it is
According to the CDC, 48.1% of adults in the United States, about 120 million people, have high blood pressure. Of those, only about 1 in 4 have it under control. In 2024, high blood pressure was a primary or contributing cause of more than 680,000 deaths in the country.
Which numbers count as high
Blood pressure is measured with two numbers, for example 120/80:
- Normal: below 120/80 mm Hg.
- High: consistently 130/80 mm Hg or above.
A single high reading is not enough for a diagnosis. The USPSTF recommends confirming it with measurements outside the clinic, at home or with a 24-hour monitor, before starting treatment.
Why you cannot feel it
The CDC put it plainly: high blood pressure usually has no warning signs or symptoms, and the only way to know if you have it is to measure it. Meanwhile, over the years it damages the heart, kidneys, blood vessels and brain, and raises the risk of heart attack and stroke.
How often to check it
The USPSTF recommends checking it:
- Every year if you are 40 or older, or at higher risk: overweight, blood pressure that was already borderline, or a family history.
- Every 3 to 5 years between 18 and 39, if you have no risk factors and your last reading was normal.
How it is managed
Management almost always combines two things: everyday changes, such as salt, physical activity, weight, alcohol and tobacco, and medication when needed. What helps most is follow-up: measure, adjust and measure again. A home blood pressure monitor and a doctor who reviews your readings make a real difference.
How we do it at the clinic
At our family medicine clinic we check your blood pressure at every visit, confirm the diagnosis before treating it and follow up with labs and medication adjustments when needed. All in English or Spanish.
Sources
- Centers for Disease Control and Prevention (CDC). About High Blood Pressure.
- Centers for Disease Control and Prevention (CDC). High Blood Pressure Facts.
- U.S. Preventive Services Task Force. Hypertension in Adults: Screening (2021).
This article is general information about our clinic and about high blood pressure. It is not medical advice and does not replace a consultation with a professional. Do not change or stop your medications without talking to your doctor. If you have chest pain, trouble breathing, sudden weakness or trouble speaking, call 911.