Momentous Fiber+ combines psyllium husk (soluble), rice bran (insoluble), and Solnul® resistant potato starch in a single 6g serving. Mixes into liquid or meals; customers report better regularity within 12–48 hours and more stable energy. Lab-tested, NSF-certified, vegan.
Observational studies and some small RCTs show associations between resistant starch intake and improved insulin sensitivity, lipid profiles, and colonic butyrate production. However, human trial evidence remains limited and inconsistent; most studies are short-term, underpowered, or conducted in specific populations (e.g., overweight adults). Fiber blends are heterogeneous, so efficacy depends heavily on composition and dose.
Resistant starch (RS) is a type of carbohydrate that resists digestion in the small intestine and reaches the colon, where it acts as a prebiotic substrate for beneficial bacteria. This fermentation produces short-chain fatty acids (SCFAs), particularly butyrate, which may improve insulin sensitivity, reduce inflammation, and support colonic health.
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Observational
“Author information: (1)Shanghai Key Laboratory of Diabetes Mellitus, Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Clinical Center for Diabetes, Shanghai Sixth People's Hospital Affiliated to Shanghai Jia”
“BACKGROUND: The intake of certain types of resistant starch (RS) has been associated in some studies with increased whole-body insulin sensitivity.”
“AIMS: Diets rich in non-viscous fibre are linked to a reduced risk of both diabetes and cardiovascular disease; however, the mechanism of action remains unclear.”
“Resistant starch (RS) is starch and products of its small intestinal digestion that enter the large bowel.”
Most human RCTs are small (N < 100) and short-duration (< 12 weeks). Some trials show no benefit on glucose control or weight loss. Individual responses to resistant starch vary widely based on baseline microbiota composition. Long-term safety and optimal dosing in general populations remain unclear. Blended formulations may contain additives or ratios not tested in the literature.
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