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White Kidney Bean Extract Research & Evidence

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This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Evidence Level

Moderate

White kidney bean extract has moderate evidence as a starch blocker, with a meta-analysis showing significant body fat reduction. It works specifically on starch (complex carbohydrates) — it does not block sugar, fat, or protein absorption. The GI side effects (gas, bloating) result from undigested starch being fermented by colonic bacteria. It is most useful for individuals who consume significant amounts of starchy foods and want to reduce carb-derived calorie absorption.

Evidence by Condition

ConditionStudied DoseEvidence
Carb/starch blocking500-1,000 mg before meals containing starchModerate
Weight management1,000-3,000 mg daily (divided before meals)Moderate
Full White Kidney Bean Extract Guide

References

  1. Meta-analysisOnakpoya I, Aldaas S, Terry R, Ernst E (2011). The efficacy of Phaseolus vulgaris as a weight-loss supplement: a systematic review and meta-analysis of randomised clinical trials. British Journal of Nutrition. DOI PubMed
  2. RCTJäger R, Abou Sawan S, Purpura M, Grube B, et al. (2024). Proprietary alpha-amylase inhibitor formulation from white kidney bean (Phaseolus vulgaris L.) promotes weight and fat loss: a 12-week, double-blind, placebo-controlled, randomized trial.. Scientific reports. DOI PubMed