🏥 Men's Health

Obesity: A Medical Guide for Nigerians

Understanding obesity as a disease — causes, complications, and treatment

Obesity is a chronic medical condition, not a personal failing. In Nigeria, rates are rising rapidly — particularly in urban women and middle-class professionals. Being significantly overweight raises risk of diabetes, hypertension, heart disease, joint damage, sleep apnoea, and some cancers. This guide explains the medical approach to obesity.

Signs and Symptoms

✓ BMI 30 or above (obese); BMI 35+ (severely obese)

✓ Waist circumference above 88 cm in women or 102 cm in men

✓ Breathlessness with moderate activity

✓ Joint pain — knees, hips, lower back

✓ Snoring or waking up unrefreshed (possible sleep apnoea)

✓ Acanthosis nigricans — dark, velvety skin folds at neck or armpits

✓ Irregular periods or infertility in women (PCOS link)

Risk Factors

Genetics — 40–70% of obesity risk is inherited
High-calorie, high-carbohydrate diet
Physical inactivity and sedentary work
Night shift work and chronic sleep deprivation
Stress and emotional eating
Medications: steroids, antipsychotics, insulin, some antidepressants
Hormonal disorders: hypothyroidism, PCOS, Cushing's syndrome
Childhood obesity — most obese adults were overweight children

When to Seek Help

BMI above 30See a doctor for full metabolic assessment — blood sugar, blood pressure, cholesterol, liver function, and thyroid tests.

BMI above 35 with complicationsYou may qualify for structured medical weight management or bariatric surgery referral.

Failed repeated attemptsIf you have tried diet and exercise seriously for 12+ months without sustained success, medical treatment options exist — including approved weight loss medications.

Breathing problems at nightRule out obstructive sleep apnoea — common in obesity and linked to heart risk.

Tests & Diagnosis

🧪 BMI and waist measurement

BMI >30 = obese; waist >88 cm (F) or >102 cm (M) = high metabolic risk.

🧪 Fasting glucose + HbA1c

Over 50% of obese Nigerians have prediabetes or undiagnosed type 2 diabetes.

🧪 Full lipid profile

Obesity causes high triglycerides and low HDL — a pattern linked to heart disease.

🧪 Liver ultrasound

To check for fatty liver disease (NAFLD) — affects up to 40% of obese adults.

🧪 Thyroid (TSH)

Rule out hypothyroidism as a driver of weight gain.

🧪 Sleep study (polysomnography)

If snoring, gasping at night, or daytime sleepiness is reported.

Treatment Options

Structured lifestyle programme

Supervised dietary change + 150 min/week physical activity is the foundation of all obesity treatment. This requires a committed 6–12 month programme, not a 2-week diet.

Calorie deficit

Eating 500 kcal/day less than you burn leads to ~0.5 kg/week loss. A dietitian calculates this based on your actual intake.

Medication (if BMI ≥30)

Options available in Nigeria include orlistat (blocks fat absorption). Semaglutide (Ozempic/Wegovy) is effective but expensive; availability is limited. Only use with medical supervision.

Bariatric surgery

For BMI ≥40 or BMI ≥35 with serious complications. Sleeve gastrectomy and gastric bypass are the main options. Available in a few private Nigerian hospitals. Results are excellent — average 25–30% weight loss maintained long-term.

Psychological support

Cognitive behavioural therapy (CBT) reduces emotional eating. Obesity has a strong mental health component — this is not optional for lasting success.

Treat underlying conditions

Managing hypothyroidism, PCOS, or depression often makes weight loss possible where it previously failed.

Frequently Asked Questions

Is obesity a disease or a lifestyle choice?

Both contribute — but obesity is now classified as a chronic disease by the WHO. Genetics, hormones, gut microbiome, medications, and mental health all play roles. Blaming willpower alone ignores the biology.

Are weight loss drugs safe?

Orlistat is generally safe with a low-fat diet. Semaglutide (Ozempic) is highly effective with good safety data. Avoid unregulated 'fat burner' supplements sold online or at markets — many contain stimulants, diuretics, or undeclared drugs.

Will I regain weight after stopping treatment?

Without continued lifestyle changes, most people regain weight when medication is stopped. This is a biological phenomenon (the body defends its 'set point'), not a failure of character. Long-term management, like any chronic disease, may be needed.

Can I do bariatric surgery in Nigeria?

Yes — a small number of hospitals in Lagos and Abuja now perform bariatric procedures. Ask your doctor for a referral to a bariatric surgeon.

How is obesity different from just being overweight?

Overweight is BMI 25–29.9; obese is BMI 30+. The health risk escalates significantly above 30 and especially above 35. Waist measurement adds important information — visceral (belly) fat is more dangerous than fat elsewhere.