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Why High Blood Pressure Is So Easy to Miss and Why Knowing Your Numbers Matters

  • Aug 18
  • 6 min read

Updated: 6 hours ago

By: 63° Editorial


August, 2026


You can feel completely well and still have high blood pressure. That is exactly why one of the most important things you can know about your cardiovascular health is also your numbers.


There is an uncomfortable thing about high blood pressure. It usually does not announce itself. You may not feel dizzy. You may not have headaches. You may exercise, work, travel, run meetings, raise a family and feel perfectly normal. And your blood pressure can still be too high.


The World Health Organization estimates that 1.4 billion adults aged 30–79 were living with hypertension worldwide in 2024. Around 600 million, approximately 44% did not know they had it.


That is what makes hypertension such an important health-literacy issue. Feeling well is not the same thing as knowing your blood pressure is healthy.


  1. What exactly is blood pressure?

Every time your heart beats, it pumps blood through your arteries. Blood pressure measures the force that blood exerts against the walls of those vessels. The reading contains two numbers. The systolic number (the top number) represents pressure when the heart contracts. The diastolic number (the bottom number) represents pressure when the heart relaxes between beats.



This is not about one slightly high reading after rushing through traffic or having a stressful morning. Hypertension is about persistent elevation, assessed properly.


  1. What numbers count as high?

This is where health information can become confusing because major guidelines use somewhat different thresholds. WHO defines clinical hypertension in adults as blood pressure of 140/90 mmHg or higher, confirmed on measurements taken on different days.



Those differences do not mean the science is contradictory. They reflect different guideline approaches to classification, cardiovascular-risk assessment and when intervention should begin.


For the reader, the practical message is do not diagnose yourself from one number. Know your readings, and discuss persistent elevation with a qualified clinician.


  1. Why can high blood pressure be so easy to miss?

Because most people with hypertension do not have obvious symptoms.



This is why calling hypertension a “silent” condition is not just dramatic public-health language. The absence of symptoms can create false reassurance. You cannot reliably feel whether your blood pressure is 118/75 or persistently 155/95.


A cuff can tell you. Your intuition cannot.


  1. This matters particularly in our part of the world

Hypertension is not a distant “Western lifestyle disease.” WHO data have consistently shown a substantial burden across the African region. A WHO regional analysis estimated that roughly one in three adults aged 30-79 in the African Region had raised blood pressure in 2019.


Globally, two-thirds of adults aged 30–79 living with hypertension are now in low- and middle-income countries. The challenge therefore is not merely treating severe hypertension after complications appear. It is finding people before anything happens.


WHO's 2025 global hypertension report places increased detection, treatment and control at primary-care level at the centre of improving outcomes. For someone living in Lagos, Abuja, Accra, Nairobi, London or Toronto, the basic lesson is blood pressure belongs in routine health awareness, not only in hospital care.


  1. “But I’m young”

Age matters, but it is not a reason to ignore blood pressure. The risk of hypertension increases as people get older, but elevated blood pressure can occur well before old age. WHO lists older age, genetics, excess body weight, physical inactivity, high dietary salt intake and excessive alcohol intake among recognised risk factors.


Family history matters too. And because elevated blood pressure often does not produce symptoms, waiting until you “feel hypertensive” does not work.



  1. One reading is not your identity

Blood pressure moves. Stress, pain, activity, caffeine, the measurement environment and even how the cuff is used can affect a reading. That means the goal is not to panic because a machine displayed a high number once. It is to measure properly and repeatedly when needed.


WHO defines hypertension using persistently elevated readings on different days rather than a single isolated measurement. Home monitoring can also be useful. The 2025 AHA/ACC guideline specifically supports home blood-pressure monitoring as part of hypertension management when used with standardised protocols and clinical follow-up. It also advises against relying on cuffless devices such as smartwatches for accurate blood-pressure measurement until their precision improves.


  1. What can you actually do about high blood pressure?




Hypertension is influenced by biology, genetics, environment, healthcare access and other structural factors as well as personal behaviour. Sometimes lifestyle changes are enough.

Sometimes medication is appropriate. Often both matter.


  1. What about salt?


That does not mean everybody needs to eat flavourless food. It means recognising where sodium accumulates, highly salted processed foods, seasoning practices, restaurant meals and frequent reliance on foods with substantial added salt can all contribute to total intake.


The more useful idea is not:

Never eat Nigerian food.

It is:

How do we keep the food we enjoy while making the overall pattern more supportive of cardiovascular health?

That is a much better question.


  1. How often should you check?

There is no single perfect frequency for everybody. Someone with established hypertension, pregnancy, cardiovascular risk factors or medication changes may need substantially more monitoring than a young adult with consistently normal readings.


The key point is that blood pressure should not be a number you first discover during an emergency. Routine measurement gives you a baseline and a baseline makes change visible.


  1. When is blood pressure an emergency?


If a very high reading occurs alongside symptoms such as chest pain, significant shortness of breath, neurological changes or other signs of acute illness, seek urgent medical care rather than trying to manage the number yourself.


63° Take

High blood pressure is easy to ignore precisely because you may feel completely normal.

That is why knowing your blood pressure is not an activity reserved for older relatives, people taking medication or someone who already has heart disease. It is basic information about your body.


You know your phone battery percentage. You may know your step count. You might know your resting heart rate, sleep score or even your HRV.


Know your blood pressure too. It is one of the simplest measurements we have and one of the most consequential to understand.


Sources


This article draws principally on the World Health Organization's 2025 Global Report on Hypertension and hypertension fact sheet, WHO African Region data, and the 2025 AHA/ACC Guideline for the Prevention, Detection, Evaluation and Management of High Blood Pressure in Adults.


This article is for general educational purposes and is not a substitute for personalised medical advice, diagnosis or treatment.

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