Why might low selenium make your thyroid sick?
Serum Selenium Status in Autoimmune Thyroid Disorders: A Case-control Study
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The odds ratio of 8.6 was statistically significant (p=0.0034), but the confidence interval (0.619–3.677) is so wide it barely excludes 1.0 — meaning the real risk could be negligible.
Most people assume a p-value under 0.01 means a strong, reliable link — but here, the wide confidence interval reveals the estimate is extremely imprecise, making the headline number misleading.
Practical Takeaways
If you have autoimmune thyroid disease, ask your doctor for a serum selenium test — especially if you live in a low-selenium region or have digestive issues.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
The odds ratio of 8.6 was statistically significant (p=0.0034), but the confidence interval (0.619–3.677) is so wide it barely excludes 1.0 — meaning the real risk could be negligible.
Most people assume a p-value under 0.01 means a strong, reliable link — but here, the wide confidence interval reveals the estimate is extremely imprecise, making the headline number misleading.
Practical Takeaways
If you have autoimmune thyroid disease, ask your doctor for a serum selenium test — especially if you live in a low-selenium region or have digestive issues.
Publication
Journal
JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH
Year
2025
Authors
Ceema Varghese, B. Vijayalakshmi, V. Paul, JK Mukkadan, KC Thresiamma
Related Content
Claims (7)
People with autoimmune thyroid disease tend to have lower levels of selenium in their blood, whether their thyroid is underactive or overactive. This suggests the low selenium levels are linked to the autoimmune condition itself, not to whether the thyroid is producing too much or too little hormone.
People with lower levels of selenium in their blood are more likely to have autoimmune thyroid disease than those with normal selenium levels, according to a study of 134 individuals in India.
People with lower levels of selenium in their bodies have a higher likelihood of developing autoimmune responses, which involve the immune system reacting against the body's own tissues.
People with autoimmune thyroid disorders tend to have lower levels of selenium in their blood compared to people without these disorders, based on measurements from a study of 134 individuals in India.
During the production of thyroid hormones, hydrogen peroxide is generated and then removed by glutathione, a molecule that depends on selenium to function properly.