High Blood Pressure: The Silent Killer You Can Control

High blood pressure — hypertension — is called "the silent killer" for good reason. It causes no symptoms, feels like nothing at all, and yet quietly damages your heart, brain, kidneys, and arteries over years. By the time you feel it, serious harm may already have been done.

The encouraging news: hypertension is one of the most treatable chronic conditions in medicine. With the right combination of lifestyle changes and, when needed, medication, blood pressure can be brought under control — and the risk of stroke and heart attack dramatically reduced.

What the Numbers Mean

Blood pressure is expressed as two numbers, for example 135/85 mmHg:

• Systolic (top number): The pressure when your heart contracts and pumps blood out. This number tends to be higher and is more important in older adults.
• Diastolic (bottom number): The pressure when your heart relaxes between beats. More important as a risk factor in younger adults.

A single high reading doesn't confirm hypertension — blood pressure fluctuates throughout the day. Diagnosis is typically based on multiple readings taken on at least 2 separate occasions.

Why It's Called the Silent Killer

High blood pressure itself causes no pain, dizziness, or discomfort in the vast majority of people. You can have blood pressure of 170/100 and feel completely normal. This is why it is so dangerous — people often don't seek treatment because they don't feel sick.

Over time, sustained high pressure damages the lining of blood vessels, causing inflammation, fatty deposits, and stiffening. This leads to:

• Heart attack — from blocked coronary arteries
• Stroke — from burst or blocked blood vessels in the brain
• Heart failure — from an overworked heart muscle
• Chronic kidney disease — from damaged kidney blood vessels
• Vision loss — from damaged retinal blood vessels
• Peripheral artery disease — from narrowed leg arteries

Stages of Hypertension

Lifestyle Changes That Lower BP

For Stage 1 hypertension, lifestyle changes alone may be enough to bring blood pressure to normal. Even for people on medication, these changes allow lower doses and improve overall cardiovascular health.

• Reduce sodium: Target below 2,000 mg/day (about 1 teaspoon of salt). This alone can lower systolic BP by 5–6 mmHg.
• Exercise regularly: 150 minutes per week of moderate aerobic exercise (brisk walking, swimming, cycling) lowers BP by 4–9 mmHg.
• Lose weight: Each kilogram of weight lost reduces BP by roughly 1 mmHg. A 5 kg loss can lower systolic BP by 5 mmHg.
• Limit alcohol: More than 1–2 drinks daily raises blood pressure. Cutting down makes a measurable difference within weeks.
• Quit smoking: Smoking causes an immediate spike in blood pressure and accelerates arterial damage.
• Manage stress: Chronic stress sustains elevated BP. Relaxation techniques, adequate sleep, and physical activity all help.
• Increase potassium: Potassium-rich foods (banana, kamote, malunggay, dried beans) help counteract sodium's effect on blood pressure.

The DASH Diet for Filipinos

The DASH (Dietary Approaches to Stop Hypertension) diet is the most evidence-based dietary pattern for lowering blood pressure. It's not about eliminating Filipino food — it's about adjusting balance:

• Eat more fruits and vegetables (aim for 8–10 servings daily)
• Choose whole grains — brown rice instead of white, wholegrain pan de sal
• Include low-fat dairy — low-fat milk or yoghurt provides calcium and reduces BP
• Choose lean proteins — fish (bangus, tilapia, galunggong are excellent), chicken without skin, legumes
• Reduce red meat, processed meat, and coconut milk-based dishes
• Cut down on patis (fish sauce), toyo (soy sauce), and table salt
• Use herbs and spices for flavour — garlic, ginger, calamansi, pepper

Medication Classes Explained Simply

If lifestyle changes are not enough — or if your blood pressure is significantly elevated — medication will be prescribed. Here's a simplified guide to the main drug classes:

• ACE Inhibitors (e.g., enalapril, lisinopril): Block a hormone that narrows blood vessels. Also protect the kidneys — especially important in people with diabetes.
• ARBs (e.g., losartan, valsartan): Similar to ACE inhibitors but often better tolerated. A good choice for people with diabetes or kidney disease.
• Calcium Channel Blockers (e.g., amlodipine): Relax blood vessel walls. Effective and commonly used. Amlodipine is often first-line in Filipino patients.
• Diuretics (e.g., hydrochlorothiazide): Help kidneys remove excess sodium and water, reducing blood volume and pressure. Often used in combination with other drugs.
• Beta-Blockers (e.g., metoprolol): Reduce heart rate and force of contraction. Particularly useful when hypertension is combined with heart disease or angina.

Most people with hypertension eventually need more than one medication. This is normal — the drugs work through different mechanisms and are often more effective in combination. Never stop hypertension medication without consulting your doctor, even if you feel fine.

Monitoring Blood Pressure at Home

Home blood pressure monitoring is strongly recommended for anyone with hypertension. It gives a far more accurate picture than clinic readings (which can be elevated by "white-coat hypertension" — anxiety in the doctor's office).

How to measure correctly:

• Sit quietly for 5 minutes before measuring
• Sit with your back supported, feet flat on the floor, arm at heart level
• Don't smoke, drink coffee, or exercise for 30 minutes before
• Take 2–3 readings, 1 minute apart, and record all of them
• Measure at the same times each day (morning and evening)
• Bring your home reading log to every doctor's appointment

Target for home readings: Below 135/85 mmHg (slightly lower than clinic target due to absence of white-coat effect).

Filipino Diet Tips to Lower Blood Pressure

• Ask for less patis or toyo when dining out — or replace with calamansi for flavour
• Cook tinola, sinigang, and nilaga with reduced salt and more vegetables
• Use vinegar and citrus juice as dipping sauces instead of salty condiments
• Choose smoked fish (tuyo, tinapa) less often — they are extremely high in sodium
• Eat more monggo, sayote, ampalaya, and malunggay — all heart-friendly vegetables
• Snack on banana (high potassium), not salty chips
• Switch to low-sodium soy sauce — it contains 40% less sodium