Research

Hormonal

Increasing dietary fiber intake, particularly insoluble fiber from whole grains, is inversely related to the risk of developing type two diabetes and improves insulin sensitivity.

To lower your risk of type two diabetes, prioritize insoluble fiber from whole grains (like bran) over just soluble fiber. Studies show that consuming around 26g of fiber daily (compared to 13g) can lower your risk by 22%. Focus on whole cereal grains rather than just fruits or vegetables for this specific benefit.

GoodSupportsHIGH confidence
Meyer et al. [41] using healthy middle aged women, observed a strong (P = 0.0012) inverse relationship between insoluble fiber and the risk of type two diabetes while soluble fiber had no effect.
James M Lattimer et al. · Nutrients · 2010

Why this rating

Supported by multiple large epidemiological studies (Meyer, Schulze) and mechanistic data, though some inconsistency exists regarding soluble vs. insoluble types.

Source

Effects of Dietary Fiber and Its Components on Metabolic Health

James M Lattimer et al. · Nutrients · 2010

DOI 10.3390/nu2121266

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DOI resolved against Crossref · corpus check 2026-06-10

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