What is Hypertension?
Hypertension, or high blood pressure, is a condition in which the blood force against the artery wall is too high. This can eventually lead to serious health problems, such as heart disease, kidney failure, and stroke. Hypertension is often called "the silent killer" because it can go unnoticed.
Blood pressure is measured in millimeters of mercury (mmHg), and two numbers are recorded:
- Systolic pressure (Top Number): Pressure when the heart beats.
- Diastolic pressure (Bottom Number): The pressure when the heart is resting between beats.
Blood Pressure Categories
- Normal: Less than 120/80 mmHg
- Elevated: 120–129/80 mmHg
- Stage 1 Hypertension: 130–139/80–89 mmHg
- Stage 2 Hypertension: 140+/90+ mmHg
- Hypertensive Crisis: 180+/120+ mmHg
Risk Factors and Common Causes
- Age: As you age, the risk increases.
- Family History: Genetics plays a role in hypertension.
- Obesity: Excess weight increases heart strain.
- Unhealthy Diet: Processed foods, unhealthy fats, and too much salt contribute to hypertension.
- Lack of Physical Activity: Sedentary living weakens your cardiovascular system.
- Alcohol and Smoking: Both increase blood pressure and damage the arteries.
- Chronic Stress: Long-term stress can increase blood pressure.
- Underlying Conditions: Diabetes, kidney disease, and thyroid disorders can cause hypertension.
Symptoms
In mild cases of hypertension, people may not experience any symptoms. However, in severe cases they can develop:
- Headaches
- Dizziness
- Blurred vision
- Chest pain
- Shortness of breath
- Nosebleeds
It's vital to consult a physician if you are experiencing any of these symptoms on a regular basis.
Complications from Untreated Hypertension
High blood pressure, if left uncontrolled, can cause:
- Heart Disease: Increases risk of heart attack and heart failure.
- Stroke: Causes blood vessels to rupture in the brain or block.
- Kidney Damage: Reduces renal function and can lead to kidney failure.
- Vision Problems: Damage to blood vessels in eyes can lead to loss of vision.
- Aneurysms: Weakening arteries increases the risk of rupture.
How is Hypertension Diagnosed?
- Regular Blood Pressure Readings: One high reading alone is not enough to diagnose; measurements must be taken over time.
- Additional Tests: Blood tests, cholesterol levels, kidney function tests, and ECGs can be used to assess your overall health.
Managing and Controlling Hypertension
Lifestyle Changes
- Eat a heart-healthy diet (the DASH diet emphasizes fruits, vegetables, lean protein, and whole grains).
- Reduce salt intake — aim for less than 2,300 mg of sodium daily.
- Exercise regularly — 30 minutes of moderate activity on most days.
- Maintain a healthy body weight — even a small weight loss will lower blood pressure.
- Stop smoking and limit alcohol consumption.
- Reduce stress through deep breathing, yoga, or meditation.
Medications
If lifestyle changes don't work, doctors might prescribe:
- Diuretics: Help remove excessive salt and water from the body.
- Beta Blockers: Reduce blood pressure and heart rate.
- ARBs and ACE Inhibitors: Relax blood vessels to lower pressure.
- Calcium Channel Blockers: Prevent blood vessel tightening.
When Should You See a Doctor?
Regular checkups are important, especially if there are risk factors. Don't ignore high blood pressure — early management can help prevent future complications.