Evidence supporting the use of: Vegetable Fiber (unspecified)
For the health condition: Blood in Stool

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Vegetable fiber (unspecified) is supported by scientific evidence for managing "blood in stool" when the underlying cause is related to hemorrhoids, anal fissures, or diverticular disease. Dietary fiber increases stool bulk and softness, reducing straining and trauma during defecation, which can help prevent or lessen rectal bleeding due to these benign causes. Multiple randomized controlled trials and meta-analyses have shown that increasing fiber intake (from sources such as psyllium, wheat bran, or unspecified vegetable fibers) reduces bleeding and other symptoms in patients with hemorrhoids and anal fissures. For example, a Cochrane review (Alonso-Coello et al., 2005) concluded that fiber supplementation decreases the risk of persisting symptoms and bleeding in hemorrhoids. However, the benefit is less clear when "blood in stool" is due to more serious conditions such as colorectal cancer, inflammatory bowel diseases, or infections, where dietary fiber is not a primary treatment. Thus, while the evidence is moderate (rated 3/5) for common benign causes, fiber should not be considered a universal remedy, and medical evaluation is essential to rule out serious underlying diseases. The general recommendation is to increase fiber intake as part of supportive management when appropriate, but not as a sole or definitive therapy for unexplained or persistent rectal bleeding.

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