Evidence supporting the use of: Bladderwrack
For the health condition: Goiter
Synopsis
Source of validity: Traditional
Rating (out of 5): 2
Bladderwrack (Fucus vesiculosus), a type of brown seaweed, has been used traditionally to support thyroid health, particularly in the context of goiter. Goiter is an enlargement of the thyroid gland, often caused by iodine deficiency. Bladderwrack is rich in iodine, an essential nutrient for the synthesis of thyroid hormones. Historical records from the 19th century indicate that bladderwrack was one of the first sources of iodine used to treat goiter before the widespread availability of iodized salt.
The rationale for using bladderwrack is largely based on its iodine content, as iodine supplementation can reduce goiter when deficiency is the underlying cause. However, while there is a biological basis for the use of iodine-rich substances like bladderwrack in iodine-deficiency goiter, there is limited direct scientific evidence specifically supporting the use of bladderwrack itself for this condition. Most modern clinical recommendations advise using standardized iodine supplements rather than herbal sources, due to concerns about variable iodine content and potential contaminants in seaweed.
In summary, the use of bladderwrack for goiter is justified by traditional practices and its iodine content, but robust clinical trials demonstrating its efficacy and safety are lacking. Therefore, while the historical basis is clear, the strength of evidence supporting its use remains modest.
