High ferritin

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
A medical finding, review with a doctor

A high ferritin most often reflects inflammation rather than too much iron, but it can also signal genuine iron overload, so it needs a doctor's interpretation, not a supplement.

Ferritin rises both when iron stores are high and when there is inflammation anywhere in the body, including infection, fatty liver, heavy alcohol use, or metabolic problems. True iron overload (haemochromatosis) is a real but less common cause. Because the meaning depends on the full picture, this is a result to interpret with a clinician.

Common causes

  • Inflammation or recent infection
  • Fatty liver or metabolic syndrome
  • Heavy alcohol use
  • Genuine iron overload (haemochromatosis)
  • Frequent iron supplementation or transfusions

Associated symptoms

  • Often none
  • Fatigue or joint pain (with overload)
  • Symptoms of the underlying condition
What to do

Do not take iron. The next step is medical: your doctor will look at related markers (transferrin saturation, inflammatory markers, liver tests) to tell inflammation from overload.

When to see a doctor

Always discuss a high ferritin with a doctor. Persistent or very high levels need investigation, and iron overload is treatable once identified.

Full marker
Ferritin: ranges, what it measures & both directions
Read the Ferritin guide →

Common questions

What does high ferritin mean?
A high ferritin most often reflects inflammation rather than too much iron, but it can also signal genuine iron overload, so it needs a doctor's interpretation, not a supplement. Ferritin rises both when iron stores are high and when there is inflammation anywhere in the body, including infection, fatty liver, heavy alcohol use, or metabolic problems. True iron overload (haemochromatosis) is a real but less common cause. Because the meaning depends on the full picture, this is a result to interpret with a clinician.
What causes high ferritin?
Inflammation or recent infection; Fatty liver or metabolic syndrome; Heavy alcohol use; Genuine iron overload (haemochromatosis); Frequent iron supplementation or transfusions.
When should I see a doctor?
Always discuss a high ferritin with a doctor. Persistent or very high levels need investigation, and iron overload is treatable once identified.

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Educational use only, not medical advice or diagnosis. Reference ranges vary by lab, age, sex, and medication, and a single result is read in context. Always review your results with a qualified clinician.