The use of seaweed for treating or supporting hemorrhoids is primarily based on traditional practices rather than strong scientific evidence. In various East Asian and coastal folk medicine systems, seaweed has been valued for its high fiber content, anti-inflammatory effects, and minerals that are believed to promote digestive health and regular bowel movements. Fiber-rich diets are known to reduce constipation, a major risk factor for hemorrhoids, and seaweed can contribute to this effect. Some traditional remedies suggest topical applications of seaweed poultices to soothe inflamed tissue, although there is minimal documented evidence of efficacy for hemorrhoids specifically.

Scientifically, dietary fiber (including that from seaweed) helps soften stools and reduce straining, which may indirectly help prevent or manage hemorrhoids. However, direct clinical trials or robust studies specifically investigating seaweed for hemorrhoid treatment are lacking. The bioactive compounds in seaweed, such as polysaccharides and polyphenols, do have documented anti-inflammatory and wound healing properties, but their effects on hemorrhoidal tissue have not been independently validated in human studies.

Overall, while seaweed’s traditional use for digestive and anti-inflammatory purposes provides some rationale, there is currently only weak scientific support for its specific use in hemorrhoid management.