In children with a specific genetic mutation (DUOX2) and mild thyroid underactivity not caused by autoimmunity, taking iodine supplements within the range of 50–150 micrograms per day does not bring thyroid hormone levels back to normal, because thyroid-stimulating hormone (TSH) stays high.

31

Pro

0

Against

Evidence from Studies

Supporting (1)

31

Community contributions welcome

31

Effects of iodine supplementation on thyroid function in children with mild congenital hypothyroidism and non-autoimmune subclinical hypothyroidism

Randomized Controlled Trial

Human

2026 Feb

Giving kids with a specific genetic problem a little extra iodine didn’t fix their thyroid issues — their TSH levels even went up. So, iodine doesn’t help when this gene is broken.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Effects of iodine supplementation on thyroid function in children with mild congenital hypothyroidism and non-autoimmune subclinical hypothyroidism

Score: 31

DOI: 10.1007/s40618-025-02718-x

Similar Assertions

In children with mild thyroid hormone imbalances, taking iodine supplements that gradually increase from 50 to 150 micrograms per day for nine months leads to a measurable increase in TSH hormone levels, but does not change other thyroid markers or cause clinical harm.

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Not getting enough iodine when kids are growing can hurt their brain development for good, because iodine is needed to make important brain hormones.

0

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