Evidence supporting the use of: Protein (unspecified)
For the body system: Thyroid Gland

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Protein is an essential macronutrient required for numerous physiological functions, including the support of the thyroid gland. The thyroid gland synthesizes hormones (primarily thyroxine, T4, and triiodothyronine, T3) that regulate metabolism, growth, and development. Protein provides amino acids, such as tyrosine, which is a direct precursor in the synthesis of thyroid hormones. Additionally, adequate protein intake supports overall endocrine health and assists in the transport of thyroid hormones in the bloodstream via carrier proteins like thyroxine-binding globulin (TBG). Several studies indicate that insufficient protein intake may impair thyroid function, particularly by reducing the synthesis of these carrier proteins and limiting hormone production. However, there is limited evidence that consuming protein beyond normal dietary requirements provides additional benefit specifically for thyroid function in healthy individuals. Most scientific validation is related to the necessity of protein for general thyroid hormone synthesis and function, rather than targeted therapeutic effects on the thyroid gland. Thus, while protein is clearly important for thyroid health, its use as a dietary supplement to specifically "support" the thyroid is only partially supported by scientific evidence and is more about maintaining normal physiological needs than providing extra benefit.

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