What Is Hypertension? Understanding High Blood Pressure
Hypertension — commonly called high blood pressure — is a condition in which the force of blood against artery walls is consistently too high. It is often called the "silent killer" because it typically has no symptoms until serious complications develop.
How common is hypertension?
According to the Centers for Disease Control and Prevention (CDC), nearly half of American adults have high blood pressure. Yet only about one in five have it under control. This gap represents one of the largest preventable burdens on the U.S. healthcare system.
Why does blood pressure matter?
Over time, elevated blood pressure damages arteries and forces the heart to work harder. It is a leading risk factor for:
- Heart attack and heart failure
- Stroke
- Chronic kidney disease
- Vision loss
- Cognitive decline
The good news: hypertension is one of the most treatable conditions. The challenge is not unknown medicine — it is consistent follow-up and adherence.
Who is at risk?
Anyone can develop hypertension, but risk increases with:
- Age (risk rises steadily after 40)
- Family history of high blood pressure
- Overweight or obesity
- High sodium diet and low potassium intake
- Physical inactivity
- Excessive alcohol consumption
- Chronic stress
- Certain medications and health conditions
Disparities are significant: Black adults have among the highest rates of hypertension, and low-income and limited-English-proficiency populations face the greatest barriers to continuous care.
How is hypertension diagnosed?
A single high reading at the doctor's office is not enough. The American Heart Association (AHA) and American Medical Association (AMA) recommend self-measured blood pressure monitoring (SMBP) — a 7-day protocol with two readings in the morning and two in the evening — to confirm a diagnosis and guide treatment.
What you can do today
- Know your numbers — get your blood pressure checked regularly
- Ask your doctor about home monitoring with a validated device
- Track readings over time, not just at office visits
- Follow your treatment plan and communicate openly about barriers