Hypertension is the term used to describe high blood pressure.
Blood pressure readings are measured in millimeters of mercury (mmHg) and usually given as two numbers. For example, 120 over 80 (written as 120/80 mmHg).
- The top number is your systolic pressure, the pressure created when your heart beats. It is considered high if it is consistently over 140.
- The bottom number is your diastolic pressure, the pressure inside blood vessels when the heart is at rest. It is considered high if it is consistently over 90.
Either or both of these numbers may be too high.
Pre-hypertension is when your systolic blood pressure is between 120 and 139 or your diastolic blood pressure is between 80 and 89 on multiple readings. If you have pre-hypertension, you are more likely to develop high blood pressure.
Symptoms
Most of the time, there are no symptoms. Symptoms that may occur include:
- Chest pain
- Confusion
- Ear noise or buzzing
- Irregular heartbeat
- Nosebleed
- Tiredness
- Vision changes
If you have a severe headache or any of the symptoms above, see your doctor right away. These may be signs of a complication or dangerously high blood pressure called malignant hypertension.
Causes
Blood pressure measurements are the result of the force of the blood produced by the heart and the size and condition of the arteries.
Many factors can affect blood pressure, including:
- How much water and salt you have in your body
- The condition of your kidneys, nervous system, or blood vessels
- The levels of different body hormones
High blood pressure can affect all types of people. You have a higher risk of high blood pressure if you have a family history of the disease. High blood pressure is more common in African Americans than Caucasians. Smoking,obesity, and diabetes are all risk factors for hypertension.
Most of the time, no cause is identified. This is called essential hypertension.
Prevention
Adults over 18 should have their blood pressure checked routinely.
Lifestyle changes may help control your blood pressure:
- Lose weight if you are overweight. Excess weight adds to strain on the heart. In some cases, weight loss may be the only treatment needed.
- Exercise regularly. If possible, exercise for 30 minutes on most days.
- Eat a diet rich in fruits, vegetables, and low-fat dairy products while reducing total and saturated fat intake (the DASH diet is one way of achieving this kind of dietary plan). (See: Heart disease and diet)
- Avoid smoking. (See: Nicotine withdrawal)
- If you have diabetes, keep your blood sugar under control.
- Do not consume more than 1 or 2 alcoholic drinks per day.
- Try to manage your stress.
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