Hypertension

Overview

Hypertension, commonly known as high blood pressure, is a long-term medical condition in which the force of blood against your artery walls is consistently too high. Blood pressure is measured using two numbers: systolic pressure (when the heart beats) over diastolic pressure (when the heart rests). A reading of 130/80 mmHg or higher is generally considered hypertensive.

Most people with hypertension feel perfectly fine, which is why it's often called the "silent killer." The condition can quietly damage blood vessels, the heart, kidneys, and brain for years before symptoms become obvious. Regular blood pressure checks are the only reliable way to detect it early.

Hypertension is one of the most common chronic conditions worldwide and a leading risk factor for heart attack, stroke, kidney failure, and vision loss. The good news is that it responds well to a combination of lifestyle changes and, when necessary, medication. With proper management, most people with hypertension live full, active lives.

Symptoms

Recognizing the symptoms of hypertension early can lead to faster diagnosis and better outcomes.

Early Symptoms

• Occasional headaches, especially in the morning
• Mild dizziness or lightheadedness
• Slightly blurred vision
• Feeling of pulsing in the neck or ears

Advanced Symptoms

• Frequent, severe headaches
• Persistent shortness of breath
• Nosebleeds that are hard to stop
• Chest tightness or discomfort
• Blood in the urine
• Irregular heartbeat

Causes & Risk Factors

Common Causes

• Narrowing of small arteries (arterioles) increases resistance to blood flow
• Increased blood volume from excess sodium retention
• Stiffening of large arteries due to aging or plaque buildup
• Hormonal imbalances affecting kidney regulation of fluids
• Genetic variations that affect blood vessel tone and kidney function

Risk Factors

• Family history of hypertension
• Age over 55 (risk increases with age)
• Being overweight or obese
• High-sodium, low-potassium diet
• Physical inactivity
• Excessive alcohol consumption
• Chronic stress
• Smoking or tobacco use
• Certain chronic conditions such as diabetes, kidney disease, or sleep apnea

How It's Diagnosed

Diagnosing hypertension is straightforward and painless. Your doctor will wrap an inflatable cuff around your arm and use a pressure-measuring gauge (sphygmomanometer) or an automatic device to check your blood pressure. Because blood pressure can fluctuate throughout the day, a single high reading does not confirm hypertension. Your doctor will typically take readings on at least two or three separate visits before making a diagnosis.

If hypertension is confirmed, additional tests may be ordered to check for organ damage and rule out secondary causes. These can include blood tests for kidney function and cholesterol, a urine test for protein, an electrocardiogram (ECG) to evaluate heart rhythm, and sometimes an echocardiogram or kidney ultrasound. Ambulatory blood pressure monitoring — wearing a portable device for 24 hours — may also be used to get a more accurate picture of your blood pressure patterns.

Treatment Options

Lifestyle Changes

• Reduce sodium intake to less than 2,300 mg per day (ideally 1,500 mg)
• Follow the DASH diet (rich in fruits, vegetables, whole grains, and lean protein)
• Exercise at least 150 minutes per week at moderate intensity
• Maintain a healthy weight — losing even 5-10 pounds can lower blood pressure
• Limit alcohol to no more than one drink per day for women, two for men
• Quit smoking and avoid secondhand smoke
• Practice stress management techniques such as deep breathing or meditation

Medications

• ACE inhibitors (e.g., lisinopril, enalapril) — relax blood vessels
• ARBs (e.g., losartan, valsartan) — block hormones that tighten blood vessels
• Calcium channel blockers (e.g., amlodipine) — relax artery walls
• Thiazide diuretics (e.g., hydrochlorothiazide) — reduce fluid volume
• Beta-blockers (e.g., metoprolol) — slow heart rate and reduce force of contractions

Complementary Approaches

• Regular meditation or mindfulness-based stress reduction
• Potassium and magnesium supplementation (under medical guidance)
• Garlic extract supplements (modest blood pressure reduction shown in some studies)
• Biofeedback therapy

Living With Hypertension

Living with hypertension requires consistent attention to your health, but it doesn't have to be overwhelming. Most people manage the condition successfully by taking their medication as prescribed, checking their blood pressure at home regularly, and keeping up with doctor's appointments. A home blood pressure monitor is an inexpensive and valuable tool that lets you track trends and share accurate data with your healthcare team.

Day-to-day management often comes down to habits: cooking with less salt, choosing whole foods over processed ones, staying active, and finding healthy ways to handle stress. Many people find that once these changes become routine, they feel better overall — not just because of lower blood pressure, but because of improved energy, sleep, and mood. Support from family and friends can make a big difference, especially when it comes to shared meals and staying motivated to exercise.

Potential Complications

• Heart attack or coronary artery disease
• Stroke or transient ischemic attack (TIA)
• Heart failure from chronic overwork of the heart muscle
• Kidney damage or kidney failure
• Vision loss due to damaged blood vessels in the eyes
• Peripheral artery disease
• Cognitive decline or vascular dementia
• Aortic aneurysm

Prevention

• Maintain a healthy weight through balanced diet and regular exercise
• Eat a diet rich in fruits, vegetables, whole grains, and low-fat dairy
• Limit sodium, processed foods, and added sugars
• Stay physically active — aim for at least 30 minutes most days
• Avoid excessive alcohol and quit smoking
• Manage stress through relaxation techniques or counseling
• Get regular blood pressure screenings, especially after age 30

Frequently Asked Questions

Sources

1. High Blood Pressure (Hypertension). Mayo Clinic. View source
2. Understanding Blood Pressure Readings. American Heart Association. View source
3. Hypertension. World Health Organization. View source
4. High Blood Pressure — NHLBI. National Heart, Lung, and Blood Institute. View source
5. Facts About Hypertension. Centers for Disease Control and Prevention. View source