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Health Conditions · Thyroid

A small gland with an outsized hold on your health

The thyroid is a butterfly shaped gland in your neck that sets the pace of your metabolism, heartbeat, mood, weight and energy. Across Nigeria and much of Africa, thousands live with thyroid disorders that were never diagnosed. Here is what to look for, and what to do next.

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Leading cause

Iodine deficiency is still the leading driver of endemic goiter in Nigeria, especially in rural communities where iodised salt reaches fewer households.

5 to 10%

Only about 5 to 10 percent of thyroid nodules turn out to be malignant. Most neck lumps are benign, but every one of them deserves a proper check.

3x

Women develop thyroid cancer roughly three times more often than men, most commonly between the ages of 30 and 50.

See a doctor if you notice any of these

  • A lump or visible swelling at the front of the neck
  • Unexplained weight gain or weight loss
  • Constant fatigue, or a racing heartbeat at rest
  • Hoarseness, or difficulty swallowing or breathing
  • Feeling cold all the time, or sweating far more than usual
  • Irregular menstrual cycles or trouble conceiving

A simple thyroid function blood test (TSH, T3, T4) is usually all it takes to find out what is going on.

Start here

Our thyroid library, from the basics through to cancer care.

Illustration of the thyroid gland in the neck
Thyroid basics

What is the Thyroid and Why is it Important?

The thyroid produces thyroxine (T4) and triiodothyronine (T3), the two hormones that control how efficiently your body turns food into energy. Understand what the gland does before you try to fix it.

Medically reviewed · August 27, 2025

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View all thyroid articles →

Explore by topic

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Thyroid nodules examination
Nodules

Thyroid Nodules: Are They Dangerous?

Most nodules are benign. Here is how doctors tell the difference, and when a scan or biopsy is warranted.

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Thyroid cancer care
Cancer

Thyroid Cancer: Symptoms, Risk Factors, and Treatment

Rare, but the most serious thyroid disorder. Know the warning signs, the risk factors, and the treatment path.

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Goiter and iodine deficiency
Iodine

Goiter and iodine deficiency in Nigeria

Why the neck swells, how iodised salt changed the picture, and where the gaps remain.

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Levothyroxine treatment
Treatment

Living well on levothyroxine

Daily hormone replacement, how to take it properly, and what monitoring should look like.

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Protecting your thyroid

Practical, evidence based steps drawn from our clinical library.

✓

Use iodised salt

The single most effective protection against goiter. Check the label and store salt in a sealed, dry container so the iodine does not degrade.

✓

Take levothyroxine correctly

On an empty stomach, with water, at the same time daily. Wait at least 30 to 60 minutes before food, coffee, calcium or iron.

✓

Do not stop your medicine

Thyroid treatment is usually lifelong. Feeling better means the dose is working, not that the condition is gone.

✓

Check your neck

Look in a mirror, tilt your head back, swallow water and watch for any bulge or lump moving in the lower neck. Report anything new.

✓

Monitor hormone levels

A TSH test every 6 to 12 months once stable, and sooner after any dose change, in pregnancy, or if symptoms return.

✓

Tell your doctor if pregnant

Thyroid hormone needs rise in pregnancy. Untreated thyroid disease affects both mother and baby, so dosing must be reviewed early.

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Not sure what your results mean?

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The information on this page is for educational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. Always speak with a qualified doctor or pharmacist about your own thyroid symptoms, test results and medicines. If you have sudden difficulty breathing, chest pain or severe neck swelling, seek emergency care immediately or call 112.