Cited by 69Food composition and propertiesNutritional Studies and DietNatural Antidiabetic Agents Studies

The Effects of Legume Consumption on Markers of Glycaemic Control in Individuals with and without Diabetes Mellitus: A Systematic Literature Review of Randomised Controlled Trials

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Bielefeld, Dale, Grafenauer, Sara, Rangan, Anna·2020·Nutrients

Abstract

Legumes are a rich source of dietary fibre, plant protein, and low-Glycaemic Index (GI) carbohydrate. Evidence suggests a positive effect on glycaemic control following a single meal; however, the effects of habitual consumption are less clear. This review aimed to investigate whether medium-to-long-term legume consumption had an effect on markers of glycaemic control in individuals with diabetes mellitus, without diabetes mellitus, or with prediabetes. As per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol, the online databases MEDLINE, Embase, CENTRAL, and CINAHL were searched from inception through to 31 March 2020. Randomised controlled trials (RCTs) ≥6 weeks in duration, reporting ≥1 of the following: fasting blood glucose (FBG), fasting blood insulin (FBI), glycosylated haemoglobin (HbA1c), homeostatic model assessment-insulin resistance (HOMA-IR), or 2-h postprandial glucose (2-h PPG), were deemed eligible. The overall quality of evidence was determined using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) assessment. A total of 18 RCTs were included, of which, 5 focused on individuals with diabetes mellitus, 12 on individuals without diabetes mellitus, and one on individuals with prediabetes. Only studies of those with type 2 diabetes mellitus (n = 5) reported significant effects for legume interventions, three of which consistently reported reductions in FBG, two reported reductions in HbA1c, one reported a reduction in FBI, and another a reduction in 2-h PPG (p < 0.05); however, the overall quality of evidence was very low. The findings of this review support the dietary inclusion of legumes; however, the need for further high-quality RCTs to be conducted is also highlighted, particularly among individuals with prediabetes, gestational diabetes mellitus and type 1 diabetes mellitus.

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  1. [3]Food and Agriculture Organization Carbohydrates in Human Nutrition. Report of a Joint FAO/WHO Expert Consultation Food and Agriculture Organization Rome, Italy 1998 9743703

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Authors
Bielefeld, D., Grafenauer, S., & Rangan, A.
Affiliations
  • The University of Sydney (AU)
  • University of Wollongong (AU)
Corresponding author
Grafenauer, Sara
Venue
Nutrients
Publisher
MDPI AG
Published
2020-07-17
Volume
12
Issue
7
Pages
2123
ISSN
2072-6643 (ISSN-L)
OpenAlex
W3042660528
Cited by
69
References
37
Citations by year
2026: 9 · 2025: 10 · 2024: 16 · 2023: 16 · 2022: 8 · 2021: 10
FWCI
1.04
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Online (University of Wollongong) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion)
  • UNSWorks (University of New South Wales, Sydney, Australia) (submittedVersion, cc-by-nc-nd)
Topics
  • Health Sciences › Nursing › Nutrition and Dietetics › Food composition and properties
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Natural Antidiabetic Agents Studies
Keywords
legume consumption, glycemic control, diabetes mellitus, prediabetes, type 2 diabetes, fasting blood glucose, HbA1c, insulin resistance, postprandial blood glucose, dietary fiber, plant proteins
MeSH terms
GRADE Approach, Glycemic Control, Blood Glucose, Diabetes Mellitus, Type 2, Fasting, Glycated Hemoglobin, Humans, Insulin Resistance, Fabaceae, Prediabetic State, Meta-Analysis as Topic, Biomarkers, Randomized Controlled Trials as Topic, Databases, Factual, Glycemic Index

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