Low Selenium: what it means
A Selenium result below the normal range is considered low. Here is what a reduced Selenium can point to, and when it is worth discussing with a doctor.
Reference range: ~0.9–1.6 umol/L; a trace element for antioxidant enzymes and thyroid hormone; both deficiency and supplement toxicity are possible
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What a low Selenium can mean
- Malabsorption — coeliac or bowel disease reducing absorption.
- Long-term artificial (intravenous) feeding without selenium.
- Very selenium-poor soil regions — historically linked to a heart-muscle disease (Keshan disease).
- Possible effects — reduced immunity and altered thyroid function.
When to discuss with a doctor
Selenium is a targeted test, not routine. It is worth checking in someone with malabsorption or on long-term artificial feeding who might be deficient, or when selenium toxicity is suspected from high-dose supplements (hair and nail changes, garlic breath, nerve or gut symptoms). Because the safe range is narrow, routine high-dose selenium supplementation in well-nourished people is not recommended and can do harm. Its level is interpreted with the clinical context and albumin. Mediora.AI shows selenium alongside thyroid and related markers so the level is read in context; the interpretation and any supplement change belong with your doctor.
How to raise a low Selenium
- Consult a healthcare provider - Discuss potential underlying causes such as malabsorption or dietary insufficiency, and explore appropriate interventions.
- Dietary sources - Incorporate selenium-rich foods like Brazil nuts, seafood, and eggs into your diet, if appropriate and approved by a healthcare provider.
- Soil and regional factors - If you live in an area with selenium-poor soil, consider discussing with a healthcare provider whether dietary adjustments or supplements are necessary.
- Review current medications - Some medications might affect selenium levels; a healthcare provider can evaluate if any adjustments are needed.
General information, not a treatment plan - decisions about medication or target values belong with your doctor.
Keep reading
One value is a snapshot. Upload the full test to see every marker explained together.
Upload your test - freeMediora.AI is informational - interpretation, not a diagnosis. A single out-of-range value is common and often benign; always discuss decisions with your doctor.