Evidence supporting the use of: Blend (Fatty Acid or Fat/Oil Supplement)
For the body system: Thyroid Gland

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Synopsis

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

Fatty acid or fat/oil supplements, particularly those rich in omega-3 polyunsaturated fatty acids (such as fish oil), have some scientific basis for supporting thyroid gland health, though the evidence is still emerging and not overwhelmingly strong. The thyroid gland is sensitive to inflammation and oxidative stress, factors that can potentially disrupt thyroid hormone production and metabolism. Omega-3 fatty acids have well-documented anti-inflammatory properties, and several animal and human studies suggest they may help modulate immune function and inflammation associated with thyroid disorders, particularly autoimmune thyroid diseases like Hashimoto's thyroiditis and Graves' disease.

Some clinical research has indicated that supplementation with omega-3 fatty acids can reduce thyroid antibody levels and improve lipid profiles in individuals with hypothyroidism. However, omega-3s do not directly increase thyroid hormone production or consistently improve thyroid function in all populations. Rather, their benefits are more related to lowering systemic inflammation, which could indirectly support thyroid health in certain contexts.

There is limited evidence for the use of other oils or fats specifically for thyroid gland support, and most claims are extrapolated from their general health benefits rather than direct thyroid effects. Overall, while omega-3 fatty acids are not a primary treatment for thyroid dysfunction, their adjunctive use may be justified in individuals with inflammatory or autoimmune thyroid conditions. More robust human trials are needed to clarify the extent of their benefits.

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