🩸 Men's Health

Type 2 Diabetes in Nigeria

Understanding the most common form of diabetes — and how to manage it.

Type 2 diabetes affects millions of Nigerians — and the majority do not know they have it. It develops gradually over years, often without obvious symptoms, causing silent damage to the heart, kidneys, eyes, and nerves. Early diagnosis and good management change the outcome completely.

Signs and Symptoms

✓ Increased thirst and frequent urination

✓ Unexplained fatigue and low energy

✓ Blurred vision — blood sugar affecting the lens

✓ Slow-healing wounds or frequent skin infections

✓ Tingling, numbness, or burning in the hands and feet

✓ Recurring genital thrush or urinary tract infections

✓ Hunger even after eating

✓ Unintentional weight loss (in poorly controlled diabetes)

✓ Darkened skin in skin folds (acanthosis nigricans) — insulin resistance sign

✓ Many people have NO symptoms — discovered only on routine blood test

Risk Factors

Family history of diabetes — first-degree relative doubles risk
Overweight or obesity — especially abdominal fat
Age over 40 (risk rises sharply)
Previous gestational diabetes or prediabetes
PCOS — underlying insulin resistance
Physical inactivity
Diet high in refined carbohydrates and sugar
High blood pressure or high cholesterol
African ethnicity — higher diabetes risk at lower BMI than European populations

When to Seek Help

NowExtreme thirst, very high blood sugar on home monitor (above 20 mmol/L), vomiting, confusion, or rapid breathing — diabetic ketoacidosis or hyperosmolar hyperglycaemic state; both are emergencies.

NowHypoglycaemia (blood sugar below 4 mmol/L) with confusion or loss of consciousness — give glucose immediately and call for help.

SoonAny of the above symptoms, or a fasting blood glucose above 7.0 mmol/L or HbA1c above 48 mmol/mol on a test.

RoutineAnnual screening for everyone over 40; every 3 years from age 25 if risk factors are present.

Tests & Diagnosis

🧪 HbA1c

The primary diagnostic and monitoring test — reflects average blood sugar over 3 months. Diagnosis: ≥48 mmol/mol (6.5%). Prediabetes: 42–47 mmol/mol. Target on treatment: typically below 53 mmol/mol (7%).

🧪 Fasting Blood Glucose

Requires 8–12 hours fasting. Diagnosis: ≥7.0 mmol/L (126 mg/dL). Prediabetes: 6.1–6.9 mmol/L.

🧪 Random Blood Glucose

Can diagnose diabetes without fasting if ≥11.1 mmol/L with symptoms.

🧪 Kidney Function (eGFR + Urine ACR)

Diabetes is the leading cause of kidney failure. Annual monitoring detects damage early — when it is still reversible.

🧪 Lipid Profile

Diabetes doubles cardiovascular risk. Annual lipid testing guides statin decisions.

🧪 Eye Examination

Annual dilated fundus examination for diabetic retinopathy — which causes blindness silently.

🧪 Foot Examination

Annual foot assessment for nerve damage and blood flow — prevents amputations.

Treatment Options

Lifestyle — The Foundation of All Treatment

A lower-carbohydrate diet (reducing eba, white rice, white bread, sugary drinks), regular exercise (150 min/week), and even 5–10% weight loss can reduce HbA1c by 1–2% — equivalent to one medication. This is not optional.

Metformin — First-Line Medication

Started alongside lifestyle change at diagnosis for most people. Reduces glucose production by the liver, improves insulin sensitivity, and is weight-neutral. See the Metformin guide for full detail.

Additional Medications as Needed

Many people need a combination of medications over time — SGLT2 inhibitors (empagliflozin), GLP-1 agonists, DPP-4 inhibitors, or sulphonylureas. Each has specific benefits and side effects. Your doctor will guide the combination.

Blood Glucose Self-Monitoring

Home blood glucose monitoring guides daily decisions about food, exercise, and medication. Target fasting blood sugar: 4.0–7.0 mmol/L; 2 hours after meals: below 8.5 mmol/L.

Managing Cardiovascular Risk

Diabetes is primarily a cardiovascular disease. Blood pressure below 130/80 mmHg, statin therapy for most adults with diabetes, and antiplatelet therapy where indicated are all part of comprehensive diabetes management.

Frequently Asked Questions

Can type 2 diabetes be reversed?

Yes — in early stages with significant weight loss (10–15% body weight) and dietary change, many people achieve remission with normal blood sugar without medication. This is more achievable in the first 5 years of diagnosis. However, the underlying tendency remains and regular monitoring continues.

Is diabetes hereditary?

Strongly so. Having a parent or sibling with type 2 diabetes roughly doubles your lifetime risk. But genes load the gun — lifestyle pulls the trigger. Most people with strong family history can delay or prevent diabetes significantly through diet and exercise.

Do I need insulin?

Not initially for most type 2 diabetics. Insulin is introduced when oral medications are insufficient to control blood sugar, or during illness, surgery, or pregnancy. Some people are on it unnecessarily — review with your doctor.

What foods should I avoid?

In the Nigerian diet, the highest-impact changes are: reducing portion size of starchy staples (eba, rice, yam, plantain), cutting out sugary drinks (Fanta, Coke, malt, juice) and white bread, and increasing vegetables, beans, and oily fish. This is practical, not theoretical.

Can I drink alcohol with diabetes?

Alcohol affects blood sugar unpredictably — it can cause hypoglycaemia hours after drinking, especially with certain medications. Occasional moderate amounts with food are generally tolerated. Avoid beer and sweet wines. Never drink on an empty stomach.