The Claim
In adults with Hashimoto's thyroiditis who are not selenium deficient, selenium supplementation has no effect on reducing thyroid-stimulating hormone (TSH) levels or preventing progression to overt hypothyroidism, and may lead to an increase in TSH levels over time.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
For adults with Hashimoto's thyroiditis who have normal selenium levels, taking selenium supplements does not lower thyroid-stimulating hormone (TSH) or stop the condition from worsening to overt hypothyroidism, and may cause TSH levels to rise over time.
See the scientific wording
In adults with Hashimoto's thyroiditis not deficient in selenium, selenium supplementation does not reduce thyroid-stimulating hormone (TSH) levels or prevent progression to overt hypothyroidism, and may even elevate TSH over time, contradicting the hypothesis that selenium improves thyroid function.
What the research says
1 studyIn people with Hashimoto's who aren't low in selenium, taking selenium supplements didn't help their thyroid—it actually made their thyroid markers worse and raised their risk of other autoimmune problems.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.