mechanistic
Analysis v1
Strong Support
When healthy older men take a single pill of a thyroid hormone called T3, their body makes more of a hormone that tells the testes to work harder — but another hormone called TSH doesn’t do this, which suggests T3 has a special role in controlling this process.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Effect of Thyroid Status Modulation on Pituitary and Peripheral Hormone Concentrations in Healthy Older Subjects
Cross-Sectional Study
Human
2025The study gave older men either a thyroid hormone pill (T3) or a different shot (rhTSH) and found that only the pill made a key reproductive hormone (LH) go up — exactly what the claim said.
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.