High Blood Pressure: The Silent Killer Behind Heart Attacks and Strokes

By Dr. Md. Mudassir Ali — Consultant Physician & Diabetologist, Faith Hospital, Hyderabad

Why Hypertension Often Has No Symptoms

If there is one phrase I wish every patient understood, it is this: high blood pressure is silent. It does not usually cause headaches, nosebleeds, or dizziness until it is already severely high. Most of my patients with hypertension feel completely normal — which is precisely why nearly half of them don't know they have it, and why it earns the name "the silent killer."

While you feel fine, sustained high pressure is quietly:

• Stiffening and damaging your arteries, making heart attacks more likely
• Weakening vessels in the brain, setting the stage for a stroke
• Scarring the filters of your kidneys — hypertension is the second leading cause of kidney failure after diabetes
• Straining the heart muscle until it thickens and weakens

A blood pressure of 140/90 or above, confirmed on more than one occasion, needs attention. And if you have diabetes along with it — as many of my patients do — the urgency doubles.

How to Measure BP Correctly at Home

Home monitoring is one of the best things you can do, but only if you measure correctly. Half the "high readings" I see in clinic come from technique errors, and half the "normal readings" come from patients measuring at the wrong moments. Common mistakes I see every week:

Wrong technique:

• Using a wrist watch-style device or an old, uncalibrated machine — use a proper upper-arm automatic monitor.
• Cuff placed over clothing, or a cuff that is too small/large for your arm.
• Talking, scrolling on the phone, or watching TV while measuring.
• Legs crossed, back unsupported, or arm not resting at heart level.
• Measuring immediately after walking, climbing stairs, or — a very common one — right after drinking tea or coffee, or smoking. Wait at least 30 minutes.

The correct method:

• Sit quietly for 5 minutes first.
• Sit with your back supported, feet flat on the floor, arm resting on a table at heart level.
• Take two readings, one minute apart, morning and evening.
• Write them down — or use a BP app — and bring the record to your appointment.

One isolated reading means little. The pattern over a week is what guides treatment.

Salt in Indian Cooking: The Hidden Load

When I tell patients to reduce salt, they respond, "I never add extra salt." But the added salt at the dining table is a small fraction of the problem. WHO recommends under 5 grams (one teaspoon) of salt per day — the average Indian consumes two to three times that. Where does it hide?

• Pickles (avakaya, achaar) — a single spoonful can carry a third of your daily limit
• Papad, appadam, vadiyalu — dehydrated and intensely salted
• Packaged snacks — chips, bhujia, namkeen, "healthy" roasted chana mixes
• Bakery items and bread — salty enough that you don't taste it
• Instant noodles, soups, and ready-to-eat meals — extremely high sodium
• Processed meats, cheese, salted butter
• Baking soda (soda) in idli/dosa batter and pakoras — sodium in a different name

Practical swaps: cut pickle and papad to an occasional accompaniment, don't add raw salt at the table, season with lemon, tamarind, herbs and spices instead of extra salt, and check labels — if sodium is high on the list, leave it on the shelf.

"My BP Is Normal Now — Can I Stop My Tablets?"

This question comes to me almost every day, and the answer is always the same: your BP is normal because of the tablets, not despite them.

Blood pressure medicines don't cure hypertension — they control it. When you stop them on your own:

• BP doesn't rise overnight; it creeps back over weeks. Patients feel fine, so they assume they never needed the tablets.
• Then comes the sudden stroke, heart attack, or kidney damage — often at an age when patients assumed they were safe.
• Stopping and restarting causes BP to swing up and down, which is more harmful than a steady, slightly higher pressure.

There are genuine cases where medicines can be reduced — significant weight loss, transformed lifestyle, or seasonal adjustments. But that is a doctor's decision made on proper readings, never a self-assessment. If your BP runs low on treatment, come and see me; we will adjust the dose safely rather than abruptly stopping.

The Dangerous Triangle: BP + Diabetes + Kidney Disease

Hypertension rarely travels alone. In my practice, the most worrying combination is the triangle of high blood pressure, high blood sugar, and kidney disease — each one damages the kidneys, and damaged kidneys push blood pressure even higher. It is a loop that feeds itself.

Breaking the triangle:

• Control both numbers: BP ideally below 130/80 for most, and HbA1c in your target range.
• Screen the kidneys yearly: a simple blood creatinine test and a urine test for protein (microalbumin) catch kidney trouble years before symptoms.
• Take the right medicines: several modern BP and diabetes medicines actively protect the kidneys and heart — another reason not to stop them on your own.
• Watch salt AND sugar together — one diet, one plate, both goals.

Closing

Hypertension gives you years of warning without ever sounding the alarm. The only way to hear it is to measure it. If you are above 30, have a family history, or haven't checked your BP in the last year — that is one reading too late.

Walk into Faith Hospital any day for a free-style quick BP check with your consultation — and if you are already on treatment, bring your home readings. Let's keep your heart, brain, and kidneys safe for the decades ahead.

Disclaimer: This article is for general awareness and is not a substitute for a personal medical consultation.