Synopsis

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

Phaeophyceae, commonly known as brown algae, includes species such as kelp, wakame, and kombu. Their use for constipation, especially in children, is primarily rooted in traditional practices rather than robust scientific evidence. In several Asian cultures, particularly in Japan, China, and Korea, brown seaweeds have been incorporated into the diet and are sometimes recommended to promote digestive health and regular bowel movements. This traditional use is likely based on the high content of dietary fiber, particularly alginates, present in Phaeophyceae. Alginates are known to absorb water and increase stool bulk, which can aid in relieving mild constipation. However, clinical studies specifically evaluating the efficacy and safety of Phaeophyceae for pediatric constipation are lacking. Most of the available evidence is anecdotal or derived from general knowledge about dietary fiber’s effects on gastrointestinal motility. Therefore, while the use of brown seaweeds for constipation has historical precedent and some logical basis due to their fiber content, it is not substantiated by high-quality scientific research, especially for children. Caution should be exercised, as excessive intake of seaweed can pose risks such as excessive iodine consumption. In summary, the practice is traditional, with limited scientific support and no specific pediatric clinical trials.

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