High Blood Pressure (Hypertension)

What Is High Blood Pressure?

High blood pressure, medically known as hypertension, is a chronic condition in which the force of blood against the walls of the arteries remains consistently elevated. The blood pressure reading is expressed as two numbers: systolic pressure (the pressure when the heart beats) over diastolic pressure (the pressure when the heart rests between beats). According to current guidelines, a reading of 130/80mmHg or higher is considered hypertensive.

Hypertension is often called the silent killer because it may produce no obvious symptoms while damaging vital organs such as the heart, brain, kidneys, and eyes.

Causes & Risk Factors

Most cases are essential hypertension, meaning no specific cause can be identified. However several modifiable and nonmodifiable factors increase risk.

• Age: Risk rises after age 45 for men and 55 for women.
• Family history: A parent with hypertension doubles your risk.
• Weight: Obesity raises blood pressure by increasing cardiac output.
• Diet: High sodium, low potassium, excessive alcohol, and processed foods contribute.
• Physical inactivity: Sedentary lifestyles impair vascular health.
• Smoking: Nicotine causes temporary spikes and longterm arterial stiffness.
• Stress: Chronic stress may lead to sustained elevations.
• Medical conditions: Diabetes, kidney disease, sleep apnea, and hormonal disorders.

Symptoms (or Lack Thereof)

Most people with early hypertension feel fine. When blood pressure becomes severely elevated (hypertensive crisis), warning signs can appear:

• Severe headache
• Blurred vision
• Chest pain
• Shortness of breath
• Nausea or vomiting
• Sudden weakness or numbness

These symptoms require immediate medical attention.

Diagnosis

Accurate diagnosis relies on consistent measurements:

1. Use a validated cufftype sphygmomanometer or an automated device.
2. Measure after five minutes of rest, seated, with the arm at heart level.
3. Take at least two readings, one minute apart, on two separate days.
4. If readings are high, your doctor may request 24hour ambulatory monitoring for a comprehensive view.

Laboratory tests (blood glucose, lipid profile, kidney function, electrolytes) help identify underlying causes or complications.

Treatment & Lifestyle Changes

Managing hypertension usually involves a combination of medication and lifestyle modification.

Medications

Common drug classes include:

• Diuretics (e.g., thiazides)
• ACE inhibitors (e.g., lisinopril)
• AngiotensinII receptor blockers (ARBs)
• Calciumchannel blockers
• Betablockers

Dosage is individualized; never stop a medication without consulting your clinician.

Lifestyle Strategies

Start with small, sustainable changes and track progress with a home monitor.

Prevention Tips

• Know your numbers check blood pressure at least once a year.
• Maintain a healthy weight; waist circumference <40in (men) or <35in (women).
• Eat a diet rich in potassium (bananas, beans, sweet potatoes).
• Stay physically active; incorporate both aerobic and strength training.
• Manage stress through mindfulness, yoga, or hobbies.
• Limit caffeine intake if you notice a pressure rise after consumption.

Prevention is a lifelong commitment, but each healthy habit adds up to a lower risk of complications such as heart attack, stroke, kidney failure, and vision loss.