mechanistic
Analysis v1
Strong Support
When healthy people take a specific dose of a steroid called dexamethasone, it briefly lowers one type of thyroid hormone (T3) but doesn't affect others (T4 or thyroglobulin), which suggests it's changing how the body converts hormones, not how the thyroid gland works.
30
0
Evidence from Studies
Supporting (1)
30
Community contributions welcome
30
Acute effects of corticosteroids on thyroid activity in Graves' disease.
Cross-Sectional Study
Human
1975 AugThe study gave the same medicine and dose mentioned in the claim and found the same small, short-lived drop in one thyroid hormone (T3) without changes in the others, which supports the idea that the medicine affects how the body converts hormones, not the thyroid itself.
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.