What is High Blood Pressure?

Blood pressure is a measure of the force of blood pushing against your artery walls as it flows through your body.

Blood pressure is defined by two numbers, systolic and diastolic.

  • Systolic = blood pressure in the arteries as your heart beats (upper number).
  • Diastolic = blood pressure in the arteries between the beats (lower number).

Normal blood pressure is less than 120 mm Hg over 80 mm Hg (120/80).

High blood pressure is 140 mm Hg over 90 mm Hg and anything above that (140/90).

Your blood pressure can go up and down during the course of the day; but when it stays high and doesn’t return to normal, it’s called hypertension, or high blood pressure.

Keeping your blood pressure in check is one of the most important things you can do for your health. Over the long term, high blood pressure can affect the health of your heart, your kidneys, and other parts of your body it can lead to many dangerous conditions including:

  • Stroke
  • Heart disease
  • Kidney failure
  • Arterial disease

If you have diabetes, high cholesterol, or if you are a smoker, the risks for experiencing one or more of these conditions is even higher.

Many, but not all, adults are eligible to join the SPYRAL HTN clinical trial.

See if you are eligible

About 30–40% of people have high blood pressure.

140mm over 90Hg