The Claim

Selenium supplementation at 20–60 mcg/day for 3 months in children with congenital hypothyroidism has no effect on serum concentrations of thyroxine (T4), triiodothyronine (T3), or the T4/T3 ratio.

Source: Selenium decreases thyroglobulin concentrations but does not affect the increased thyroxine-to-triiodothyronine ratio in children with congenital hypothyroidism.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
37score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Giving children with congenital hypothyroidism selenium supplements at 20–60 mcg per day for three months does not change the levels of thyroid hormones T4 and T3 in their blood, or the ratio between them.

See the scientific wording

Selenium supplementation at 20–60 mcg/day for 3 months in children with congenital hypothyroidism does not alter serum concentrations of thyroxine (T4), triiodothyronine (T3), or the T4/T3 ratio, indicating that peripheral conversion of T4 to T3 is not limited by selenium status in this population.

What the research says

1 study

  1. Study: Selenium decreases thyroglobulin concentrations but does not affect the increased thyroxine-to-triiodothyronine ratio in children with congenital hypothyroidism.

    Giving kids with underactive thyroids a little extra selenium didn't change their thyroid hormone levels, meaning their bodies were already converting the medicine into active hormone just fine—selenium wasn't holding them back.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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