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Benefits of White Kidney Bean Extract

Evidence:Moderate
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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-Based Benefits

  • Body fat reduction — Onakpoya et al. (2011, meta-analysis, 6 RCTs) found white kidney bean extract significantly reduced body fat by 1.77 kg vs placebo
  • Starch blocking — Phase 2 extract blocks 66-75% of alpha-amylase activity in vitro, reducing starch digestion and calorie absorption from carbohydrate meals
  • Post-meal blood sugar — Udani et al. (2004, n=13) showed white kidney bean extract significantly reduced postprandial blood sugar response to a standardized bread meal
  • Weight loss support — Barrett & Udani (2011) found white kidney bean extract 1,000 mg before meals led to greater weight and waist circumference loss vs placebo when combined with diet

What the Research Says

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.

Related Conditions

Weight LossBlood Sugar
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