Thyroid hormone doesn’t directly make sex hormones like testosterone or estrogen, but it helps the body’s sex glands work properly so they can produce these hormones at the right levels.
Evidence from Studies
Supporting (3)
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Effect of Thyroid Status Modulation on Pituitary and Peripheral Hormone Concentrations in Healthy Older Subjects
This study gave people extra thyroid hormone (T3) and found that their testosterone levels went up, which means thyroid hormone helps the body make more sex hormones — supporting the idea that it 'permits' or enables this process.
Molecular Mechanisms of Thyroid Hormone-stimulated Steroidogenesis in Mouse Leydig Tumor Cells
This study found that a thyroid hormone (T3) makes mouse testicle cells produce more of the sex hormones testosterone and progesterone by turning on key genes, showing that thyroid hormone helps control these sex hormones — just like the claim says.
Thyroid Hormone Deiodination and Action in the Gonads.
This study shows that thyroid hormone helps the testes make sex hormones like testosterone — without the right amount of thyroid hormone, hormone production goes wrong. This supports the idea that thyroid hormone is needed for sex hormones to be made properly.
Contradicting (0)
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Gold Standard Evidence Needed
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