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Thyroid Hormones

Thyroid Hormones are a collection of three hormones: thyroid stimulating hormone (TSH) which signals production of T4 (a longer lasting and 'active storage' hormone) and T3 (quick usage and more potent). The latter two hormones are active, and increase metabolic rate.

Our evidence-based analysis on thyroid hormones features 9 unique references to scientific papers.

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Last Updated:

Summary of Thyroid Hormones

Thyroid hormones are a class of hormones secreted from the thyroid gland which regulate a wide variety of mechanisms, usually divided between genomic effects (those mediated through the genome and DNA transcription) and those that are not.

It is most well known for, in higher than normal levels, increasing the basal metabolic rate and inducing fat loss.

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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 Hormones.

Full details on all Thyroid Hormones supplements are available to Examine members.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
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.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-d - - See study

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Things to Note

Also Known As

T3, T4

Click here to see all 9 references.