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A legume-enriched diet improves metabolic health in prediabetes mediated through gut microbiome: a randomized controlled trial

Author

Listed:
  • Xiaorong Wu

    (Centre for Translational Medicine)

  • Alvin Surya Tjahyo

    (Agency for Science Technology and Research (A*STAR))

  • Vera Sergeyevna Brok Volchanskaya

    (Centre for Translational Medicine)

  • Long Hui Wong

    (Centre for Translational Medicine)

  • Xianning Lai

    (Centre for Translational Medicine)

  • Yi Ning Yong

    (Agency for Science Technology and Research (A*STAR))

  • Farhana Osman

    (Agency for Science Technology and Research (A*STAR))

  • Shia Lyn Tay

    (Agency for Science Technology and Research (A*STAR))

  • Priya Govindharajulu

    (Agency for Science Technology and Research (A*STAR))

  • Shalini Ponnalagu

    (Agency for Science Technology and Research (A*STAR))

  • Rachel Tso

    (Agency for Science Technology and Research (A*STAR))

  • Hwee Sze Teo

    (Agency for Science Technology and Research (A*STAR))

  • Kaijie Khoo

    (Centre for Translational Medicine)

  • Huan Fan

    (Centre for Translational Medicine)

  • Chew Chan Goh

    (Centre for Translational Medicine)

  • Clara Poh Lian Yap

    (Centre for Translational Medicine)

  • Melvin Khee-Shing Leow

    (Agency for Science Technology and Research (A*STAR)
    A*STAR
    Tan Tock Seng Hospital
    Nanyang Technological University)

  • Christiani Jeyakumar Henry

    (Agency for Science Technology and Research (A*STAR))

  • Sumanto Haldar

    (Agency for Science Technology and Research (A*STAR)
    St. Paul’s Lane)

  • Kevin Junliang Lim

    (Centre for Translational Medicine)

Abstract

Healthy dietary patterns rich in legumes can improve metabolic health, although their additional benefits in conjunction with calorie restriction have not been well-established. We investigated effects of a calorie-restricted, legume-enriched, multicomponent intervention diet compared with a calorie-restricted control diet in 127 Chinese prediabetes participants, living in Singapore. The study was a 16-week, single-blind, parallel-design, randomized controlled trial (n = 63 intervention group (IG), n = 64 control group (CG); mean ± SD age 62.2 ± 6.3 years, BMI 23.8 ± 2.6 kg/m2). Primary outcomes were markers of glycemia and all measurements were taken at 2 or 4-weekly intervals. At the end of 16 weeks, both groups had significantly lower BMI (q(Time) = 1.92 ×10-42, β = -0.02) compared with baseline, with minimal difference between groups. The IG had significantly greater reductions in LDL cholesterol (q(Treatment×Time) = 0.01, β = -0.16), total cholesterol (q(Treatment×Time) = 0.02, β = -0.3) and HbA1c (q(Treatment×Time) = 0.04, β = -0.004) compared with CG, alongside increases in fiber degrading species in IG, mediated through metabolites such as bile acids and amino acids. A legume-enriched, multicomponent intervention diet can improve metabolic health in a prediabetes population, in addition to benefits obtained from calorie restriction alone, partially mediated through changes in gut microbial composition and function. Trial registration: Clinical Trials NCT04745702.

Suggested Citation

  • Xiaorong Wu & Alvin Surya Tjahyo & Vera Sergeyevna Brok Volchanskaya & Long Hui Wong & Xianning Lai & Yi Ning Yong & Farhana Osman & Shia Lyn Tay & Priya Govindharajulu & Shalini Ponnalagu & Rachel Ts, 2025. "A legume-enriched diet improves metabolic health in prediabetes mediated through gut microbiome: a randomized controlled trial," Nature Communications, Nature, vol. 16(1), pages 1-20, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56084-6
    DOI: 10.1038/s41467-025-56084-6
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    References listed on IDEAS

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