The Study
Plasma metabolite profile of legume consumption and future risk of type 2 diabetes and cardiovascular disease
This study looked at chemicals in people's blood and noticed that those who ate more legumes had a different mix of chemicals — and those people were also less likely to get type 2 diabetes. But it didn't prove that eating legumes caused the change; maybe people who eat legumes also exercise more or eat healthier overall.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists found a special chemical fingerprint in the blood that shows when people eat beans and other legumes.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 572 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This suggests that eating legumes might trigger biological changes that protect against diabetes, beyond what people remember eating.
- 2People with this fingerprint had a 25% lower chance of getting type 2 diabetes over nearly 4 years, even if they didn't report eating many beans.
- 3But the fingerprint didn't predict heart disease.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Cardiovascular Diabetology
Year
2024
Authors
Hernando J. Margara-Escudero, I. Paz-Graniel, J. García-Gavilán, M. Ruíz-Canela, Qi Sun, C. Clish, E. Toledo, D. Corella, R. Estruch, E. Ros, O. Castañer, F. Arós, M. Fiol, M. Guasch-Ferré, J. Lapetra, C. Razquín, C. Dennis, A. Deik, Jun Li, E. Gómez-Gracia, N. Babio, M. Martínez-González, Frank B. Hu, J. Salas-Salvadó
Related Content
Claims (5)
In elderly Mediterranean adults at high risk for heart disease, the pattern of metabolites in the blood linked to eating legumes is not connected to the development of cardiovascular disease over nearly four years, but it is strongly connected to the development of type 2 diabetes.
In elderly Mediterranean adults at high cardiovascular risk, a specific pattern of blood metabolites—including lower cortisol and certain phospholipids and higher N-acetylornithine and homoarginine—is linked to a 25% lower rate of type 2 diabetes over 3.7 years, regardless of reported legume consumption or other lifestyle factors.
Consuming legumes is associated with specific changes in 40 metabolites in the body, including some that decrease and others that increase, indicating measurable shifts in lipid and amino acid metabolism.
People with a specific pattern of metabolites linked to legume intake have a lower risk of developing type 2 diabetes, even when accounting for how much legume they report eating.
Legumes contain protein and fiber that human bodies and gut bacteria use together.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.