Scientific Information on Thyroid-Stimulating Hormone
Thyroid-Stimulating Hormone
Summary of Thyroid-Stimulating Hormone
Scientific Information on Thyroid-Stimulating Hormone
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Human Effect Matrix
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The Human Effect Matrix looks at human studies to tell you what supplements affect Thyroid-Stimulating Hormone.
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| Grade | Level of Evidence [show legend] |
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Robust research conducted with repeated double-blind clinical trials |
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Multiple studies where at least two are double-blind and placebo controlled |
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Single double-blind study or multiple cohort studies |
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Uncontrolled or observational studies only |
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Level of Evidence
?
The amount of high quality evidence. The more
evidence, the more we can trust the results.
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Supplement |
Magnitude of effect
?
The direction and size of the supplement's impact on
each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
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Consistency of research results
?
Scientific research does not always agree. HIGH or
VERY HIGH means that most of the scientific research agrees.
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Notes |
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Minor
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High See all 3 studies |
An increase in Thyroid Stimulating Hormone (TSH) occurs both at the doses that suppress T3 and T4 and sometimes at lower doses where thyroid function is not impaired
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- | - See study |
No significant influence of betaine on circulating TSH concentrations in serum.
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Notable
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- See study |
There was a notable reduction in one study where patients with subclinical hypothyroidism took 600 mg of a standardized extract (5% withanolides) for 8 weeks. More research is needed.
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