Introduction
Hypertension, or persistently high blood pressure, affects roughly one in four adults across sub-Saharan Africa — yet most people don't know they have it. Because it rarely causes symptoms in its early stages, it is often only discovered after it has already begun to damage the heart, kidneys or brain.
What is hypertension?
Blood pressure is the force your blood exerts against artery walls as your heart pumps. It is written as two numbers, such as 120/80 mmHg. Consistent readings at or above 140/90 mmHg are generally considered hypertension.
Because arteries are elastic, they can absorb short spikes — during exercise or stress, for example. Hypertension is diagnosed only when readings stay high across multiple measurements taken on different days.
Why it matters
Uncontrolled hypertension is one of the leading preventable causes of stroke, heart attack, kidney failure and vision loss. The damage is gradual and often silent, which is why regular screening matters more than waiting for symptoms.
Daily habits that make a difference
Reduce added salt, especially from processed foods and stock cubes. Aim for less than one teaspoon of salt per day across all meals.
Move your body for at least 30 minutes on most days — brisk walking counts.
Prioritise sleep, hydration and stress management. Chronic stress and poor sleep both raise blood pressure over time.
If your clinician has prescribed medication, take it consistently — even on days you feel well.
Monitoring at home
A validated upper-arm monitor is more accurate than wrist devices. Sit quietly for five minutes, feet flat, arm supported at heart level, and take two readings a minute apart.
Keep a simple log — date, time, and both numbers. Bring it to your next clinic visit.
Key takeaways
- Hypertension is common, silent and preventable in most cases.
- Regular screening from age 18 is the single most important step.
- Salt reduction, movement, sleep and medication adherence are the cornerstones of control.
Frequently asked questions
How often should I check my blood pressure?
If your readings are normal, at least once a year. If you have been diagnosed with hypertension, follow the schedule your clinician recommends — often weekly at home.
Is hypertension hereditary?
Family history increases your risk, but lifestyle factors — diet, activity, weight, stress — usually determine whether that risk becomes disease.
The information provided by MediReach Digital Health is for educational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified healthcare professional for personal medical concerns.