What Is Blood Pressure?
As your heart beats to pump blood throughout your body, the blood pushes against the sides of the vessels through which it flows. This pushing is known as blood pressure, and too much pressure can exert a strain on your heart and arteries. Blood pressure is measured in millimeters of mercury (mmHg) and is always represented by two numbers, one above the other. For example, a blood pressure reading of 120/80 mmHg would be described as “120 over 80” and would represent blood pressure at the top of the normal range. The upper number represents systolic pressure, the highest level of pressure that is reached when your heart beats to pump blood through your body. The lower number represents diastolic pressure, the lowest level of pressure that is reached when your heart relaxes between beats. You can measure your blood pressure at home with a blood pressure cuff, or a health professional can do it for you at a doctor’s office or clinic.
Keeping Blood Pressure in a Healthy Range
To maintain good health, it is important to keep your blood pressure in the normal range. High blood pressure (also called hypertension) can lead to life-threatening conditions such as kidney disease, peripheral artery disease, heart attack, or stroke. You might have high blood pressure and not know it because it does not always present distinct symptoms. For this reason, high blood pressure is known as a “silent killer,” and keeping track of your numbers is a positive step toward maintaining good health.
The normal range for blood pressure shows a systolic (upper) number of less than 120 and a diastolic (lower) number of less than 80. Elevated blood pressure is when the systolic number is between 120 and 129 and the diastolic number is less than 80. Stage 1 hypertension is diagnosed when the systolic (upper) number is between 130 and 139 or when the diastolic number is between 80 and 89. Stage 2 hypertension is indicated by a systolic number of 140 or higher or a diastolic number of 90 or higher. A hypertensive crisis, requiring immediate medical attention, occurs when the systolic number is higher than 180 and/or the diastolic number is higher than 120.
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How to Lower Your Blood Pressure
If you have elevated or high blood pressure, you can take steps to lower it. If your doctor prescribes…
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