The most commonly used insoluble fiber supplement is wheat fiber. However, it hasn’t been studied enough under well-controlled conditions for researchers to have a full understanding of its effects, and the existing body of research does not clearly support its use for blood sugar management.[1][2][3] The same goes for studies on isolated arabinoxylan, the dominant form of fiber in wheat.[4][5]
Can insoluble fiber supplements help control blood sugar?
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•Last Updated: May 16, 2025
Insoluble fiber supplements, particularly wheat fiber, have not been sufficiently studied under controlled conditions to determine their effectiveness in managing blood sugar levels. The existing research does not clearly support their use for this purpose.