🛡️ Men's Health

Stroke Prevention in Nigeria

Reducing your stroke risk — the evidence-based steps.

Stroke is largely preventable. Up to 90% of strokes globally are attributable to modifiable risk factors. In Nigeria, high blood pressure — the leading cause of stroke — affects the majority of adults over 50. This page explains what you can do, specifically in a Lagos context, to dramatically reduce your stroke risk.

Signs and Symptoms

✓ Stroke prevention addresses risk factors rather than symptoms

✓ Most stroke risk factors are silent — high blood pressure, atrial fibrillation, high cholesterol have no symptoms

✓ A previous TIA (transient ischaemic attack / "mini-stroke") is the most urgent reason to seek prevention care

✓ Risk factors may include: hypertension, diabetes, atrial fibrillation, smoking, obesity, alcohol

Risk Factors

Hypertension — the single most important risk factor for stroke in Nigeria. Causes 70% of strokes.
Atrial fibrillation — irregular heartbeat causing embolic strokes. Risk doubles with each decade from age 50.
Diabetes — doubles stroke risk, partly through accelerated atherosclerosis
High LDL cholesterol — accelerates artery disease; statins reduce stroke risk by 25–30%
Smoking — doubles stroke risk; risk halves within 2 years of stopping
Heavy alcohol use — increases blood pressure and causes atrial fibrillation
Obesity, particularly abdominal — clusters with hypertension, diabetes, and cholesterol abnormalities
Physical inactivity — regular exercise reduces stroke risk by up to 27%
Previous TIA — 10–15% stroke risk within 90 days without treatment

When to Seek Help

NowAny TIA (transient ischaemic attack) — symptoms that resolved completely. Go to hospital immediately — the risk of full stroke in the next 48 hours is very high.

SoonBlood pressure consistently above 140/90mmHg — this level significantly elevates stroke risk and needs medical management.

RoutineAnyone over 40 for a cardiovascular risk assessment — to calculate 10-year stroke and heart attack risk and implement a prevention plan.

Tests & Diagnosis

🧪 Blood Pressure (Clinic + Home Monitoring)

24-hour ambulatory blood pressure monitoring provides the most accurate picture of true blood pressure burden — including the critical nighttime reading. Nighttime hypertension is particularly strongly associated with stroke.

🧪 ECG (Electrocardiogram)

Identifies atrial fibrillation — which requires anticoagulation to prevent embolic strokes. Annual ECG recommended from age 65; earlier if palpitations or pulse irregularity are noted.

🧪 Fasting Lipid Profile

LDL cholesterol target depends on individual risk. High-risk individuals (previous TIA, atrial fibrillation, diabetes) need LDL below 1.8 mmol/L.

🧪 Carotid Doppler Ultrasound

Identifies narrowing in the carotid arteries — present in some people with TIA or stroke. Significant narrowing (>70%) can be surgically treated to prevent further events.

🧪 HbA1c

Uncontrolled diabetes is a major stroke risk factor. Target HbA1c below 7% in most people.

Treatment Options

Blood Pressure Control — The Most Important Step

Every 10mmHg reduction in systolic blood pressure reduces stroke risk by approximately 27%. The target is below 130/80mmHg for most people. Medication, sodium reduction, exercise, and alcohol reduction all contribute.

Anticoagulation for Atrial Fibrillation

Atrial fibrillation causes 15–20% of all strokes in Nigeria. Anticoagulant medication (warfarin or a NOAC like rivaroxaban or apixaban) reduces this risk by 60–70%. AF must be detected and treated.

Statin Therapy

For people at high cardiovascular risk — reduces LDL cholesterol and stabilises arterial plaques. Statins reduce stroke risk by 25–30% in high-risk patients.

Antiplatelet Therapy (Aspirin)

For people who have had an ischaemic stroke or TIA — aspirin or clopidogrel prevents platelet-driven clot formation. NOT recommended for primary prevention in average-risk people (harms outweigh benefits).

Lifestyle Modifications

DASH diet (low sodium, rich in vegetables and fruit) reduces blood pressure measurably. Physical activity 30 minutes daily reduces stroke risk. Stopping smoking halves risk within 2 years. Weight loss reduces blood pressure and diabetes risk.

Frequently Asked Questions

What is the most powerful thing I can do to prevent stroke?

Control your blood pressure. If your blood pressure is consistently above 140/90mmHg and you are not on treatment, or above 130/80mmHg and you have diabetes or previous cardiovascular events — starting treatment is the single highest-impact action you can take.

Does aspirin prevent stroke?

Aspirin is used after a stroke or TIA to prevent recurrence. For people who have never had a stroke, the bleeding risk of daily aspirin outweighs the benefit in most people. Do not self-prescribe aspirin for stroke prevention without medical advice.

Can I stop my blood pressure medication if I feel well?

No. Blood pressure medication controls, not cures, hypertension. Your blood pressure will rise again when you stop. Never stop blood pressure medication without discussing with your doctor first.

Is stroke hereditary?

Family history modestly increases stroke risk — mainly through shared genes for hypertension, diabetes, and cholesterol. Having a first-degree relative with stroke should prompt earlier and more proactive risk factor management.

How do I know if I have had a TIA?

A TIA causes sudden neurological symptoms — weakness, speech difficulty, vision loss, confusion — that resolve completely within minutes to hours. Many TIAs are missed because they resolve before reaching hospital. If you have ever had such an episode, discuss it with a doctor — even if you feel completely normal now.