Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Omega-3 fatty acids, primarily found in fish oil (EPA and DHA), have some scientific basis for their use in supporting thyroid gland function, though evidence is limited and not robust. Several studies suggest omega-3s possess anti-inflammatory properties, which may be beneficial in autoimmune thyroid disorders such as Hashimoto's thyroiditis and Graves' disease. Chronic inflammation is recognized as a contributing factor in the pathogenesis of these conditions. A few small studies and animal experiments indicate that omega-3 supplementation may help reduce thyroid-specific antibodies and support immune regulation. For example, research has shown that omega-3s can modulate the activity of immune cells and cytokines implicated in thyroid autoimmunity. However, there is no strong direct evidence that omega-3 fatty acids significantly improve thyroid hormone levels or reverse hypothyroidism or hyperthyroidism in humans.

Most clinical guidelines do not specifically recommend omega-3s for thyroid support, but they are considered generally supportive to overall health, particularly due to their cardiovascular and anti-inflammatory benefits. The use of omega-3s for thyroid health is based on scientific rationale regarding their immune-modulating properties, rather than traditional use in thyroid disorders. Therefore, omega-3s may serve as an adjunct in managing thyroid conditions, especially those with an inflammatory or autoimmune component, but they should not be considered a primary or stand-alone treatment for thyroid dysfunction.

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Products containing omega-3 fatty acids

Nature's Sunshine Flax Seed Oil (With Lignans)