Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Soy fiber is used to support or treat hemorrhoids primarily due to its role as a dietary fiber. Scientific evidence supports the use of fiber supplements, including soy fiber, to help manage and prevent hemorrhoids by softening stools and increasing stool bulk, which reduces straining during bowel movements—a primary cause and aggravator of hemorrhoids. Multiple randomized controlled trials and meta-analyses have shown that increased fiber intake leads to significant improvement in hemorrhoid symptoms such as bleeding and discomfort. While most studies examine fiber in general (including wheat bran, psyllium, and others), soy fiber—as an insoluble fiber—functions similarly in improving bowel regularity and consistency. Clinical guidelines, such as those from the American Society of Colon and Rectal Surgeons, recommend fiber supplementation as a first-line therapy for hemorrhoids, citing evidence of symptom reduction and decreased recurrence rates. There is less data specifically on soy fiber compared to other fibers, but its mechanism and clinical effect are considered comparable. Overall, the scientific validation for using fiber—including soy fiber—to support hemorrhoid management is strong, justifying its use in this context.

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