Synopsis

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

Dulse leaf (Palmaria palmata) is a type of red seaweed commonly used in traditional herbal and folk medicine, particularly in coastal regions such as Ireland, Scotland, and parts of North America. Its use to support or treat hypothyroidism is primarily based on its natural iodine content. Iodine is an essential trace mineral needed for the synthesis of thyroid hormones, and iodine deficiency is a well-known cause of hypothyroidism. In traditional practices, dulse and other seaweeds have been consumed as dietary sources of iodine to help maintain healthy thyroid function.

However, while the rationale for using dulse leaf in hypothyroid conditions is grounded in its iodine content, there is limited direct scientific research specifically evaluating dulse as a treatment for hypothyroidism. Most of the available evidence is extrapolated from the broader understanding of iodine’s role in thyroid health. Additionally, in regions where dietary iodine deficiency is rare due to iodized salt and other sources, the benefit of supplementing with dulse may be minimal or even risky, as excessive iodine intake can also disrupt thyroid function. Clinical studies on dulse itself are lacking, so its efficacy for hypothyroidism remains largely traditional and theoretical rather than scientifically validated. Overall, while dulse has a plausible mechanism of action due to its iodine content, the evidence supporting its use for hypothyroidism specifically is limited, meriting a moderate evidence rating of 2.

More about dulse leaf
More about Hypothyroid

Other ingredients used for Hypothyroid

Other health conditions supported by dulse leaf

Products containing dulse leaf

Nature's Sunshine Dulse Liquid
Nature's Sunshine Urinary System