The Claim
In children with congenital hypothyroidism receiving levothyroxine treatment, selenium supplementation at 20–60 mcg/day for 3 months significantly reduces thyroglobulin concentrations by approximately 74% compared to baseline, without altering serum thyroid hormone levels or the T4/T3 ratio.
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.
In children with congenital hypothyroidism who are already taking levothyroxine, taking a selenium supplement for three months lowers thyroglobulin levels by about 74%, but does not change the amounts of thyroid hormones in the blood or the ratio between T4 and T3.
See the scientific wording
In children with congenital hypothyroidism receiving levothyroxine treatment, selenium supplementation at 20–60 mcg/day for 3 months significantly reduces thyroglobulin concentrations by approximately 74% compared to baseline, but does not alter serum thyroid hormone levels or the T4/T3 ratio, suggesting a specific effect on thyroid gland stimulation rather than peripheral hormone conversion.
What the research says
1 studyGiving kids with underactive thyroids a small selenium supplement made their thyroid gland less overworked (lower thyroglobulin) without changing the hormones in their blood, meaning it helped calm the thyroid itself, not how the body uses the medicine.
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.