Longevity & Aging · Diets
legume intake decreases cardiovascular disease
In plain terms: Do beans and lentils lower heart disease?
Part of: • Aging
Probably modestly yes, but it's only an association and there's no clear link to strokes or heart attacks.
📅 Last reviewed: 2026-07-15 ⓘ
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
What the evidence shows
Higher legume intake is associated with modestly lower CVD/CHD/hypertension/obesity incidence (low-certainty), but shows NO association with stroke, MI, diabetes, or CVD mortality - a Blue-Zones staple whose hard-outcome signal is weak-to-null.
The evidence (15)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Zhao N, Jiao K, Chiu YH, Wallace TC 2024 · Nutrients | observational | supports | moderate | Scoping review of 30 studies: pulse intake linked to improved lipids, BP, CVD risk and mortality. |
| Alake SE, Ice JA, Orphan J, Adedigba P, Islam P, Hatter B, Lu P, Perez L, Olawale F, Butcher JT, Knotts TA, Wozniak KL, Lin D, Chowanadisai W, Smith BJ, Lucas EA 2026 · Nutr Res | animal | supports | moderate | Pinto bean prevented vascular dysfunction via gut microbiome in IL-10-dependent manner in atherogenic-diet mice. |
| Ferreira H, Vasconcelos M, Gil AM, Pinto E 2021 · Crit Rev Food Sci Nutr | meta-analysis | supports | moderate | SR of RCTs: pulse consumption (~150 g/day) improved blood lipids, blood pressure, inflammation markers. |
| Viguiliouk E, Glenn AJ, Nishi SK, Chiavaroli L, Seider M, Khan T, Bonaccio M, Iacoviello L, Mejia SB, Jenkins DJA, Kendall CWC, Kahleová H, Rahelić D, Salas-Salvadó J, Sievenpiper JL 2019 · Adv Nutr | meta-analysis | supports | low | Umbrella+SRMA 28 cohorts: CVD incidence RR 0.92, CHD 0.90, HTN 0.91, obesity 0.87; null for stroke/MI/diabetes/CVD-mortality (low/very-low GRADE) |
| Baldeón ME, Felix C, Fornasini M, Zertuche F, Largo C, Paucar MJ, Ponce L, Rangarajan S, Yusuf S, López-Jaramillo P 2021 · PLoS One | observational | supports | low | PURE Ecuador cross-sectional: higher legume consumption protective against metabolic syndrome and T2D. |
| Zargarzadeh N, Mousavi SM, Santos HO, Aune D, Hasani-Ranjbar S, Larijani B, Esmaillzadeh A 2023 · Adv Nutr | meta-analysis | contradicts | moderate | Dose-response MA of prospective cohorts (31 articles, ~1.14M participants). CVD mortality, highest vs lowest legume intake: HR 0.99 (95% CI 0.91 to 1.09; 11 cohorts, 546,306 participants, 18,056 CVD deaths; Egger P=0.98); per 50 g/d HR 1.01 (0.94 to 1.08) - a precise clean null. CHD mortality HR 0.93 (0.78 to 1.09; 5 cohorts, I2 66%). Stroke mortality HR 0.91 (0.84 to 0.99; 5 cohorts) was not robust - 0.92 (0.82 to 1.03) after dropping Linxian or HAPIEE. All-cause mortality HR 0.94 (0.91 to 0.98). GRADE certainty low for CVD and CHD mortality. Mortality only - no incidence data. |
| Mendes V, Niforou A, Kasdagli MI, Ververis E, Naska A 2023 · Nutr Metab Cardiovasc Dis | meta-analysis | supports | moderate | higher legume intake associated with lower CVD/CHD risk |
| Clark JL, Taylor CG, Zahradka P 2021 · Nutr Metab Cardiovasc Dis | RCT | supports | low | Black/red kidney beans induced favorable postprandial vascular responses vs white rice in healthy adults. |
| Thorisdottir 2023 · Food Nutr Res | meta-analysis | contradicts | high | SR/meta-analysis: legume intake associated with lower CVD risk factors; evidence for hard CVD endpoints limited/low-certainty. |
| Khairan P, Kato Y, Arafa A, Nakao YM, Teramoto M, Maruyama K, Kokubo Y 2026 · J Nutr | observational | mixed | moderate | Prospective cohort: high soy food intake associated with cardiovascular benefit; AF link explored. |
| Gaeini Z, Mirmiran P, Azizi F 2026 · Sci Rep | observational | mixed | moderate | TLGS prospective cohort, n=2,648, 171 CVD cases over median 10.6 y. Sensitivity analysis: population-adapted carbohydrate quality index (fiber + glycemic index + solid-carbohydrate ratio + legume intake, each tertile-scored and summed), T3 vs T1 HR 0.93 (95% CI 0.57-1.50). Composite score, no legume-alone estimate. |
| Brandt EJ, Leung CW, Chang T, Ayanian JZ, Banerjee M, Kirch M, Mozaffarian D, Nallamothu BK 2025 · The Journal of nutrition | observational | supports | low | Legume dietary pattern (PCA-derived) negatively associated with prevalent CVD, β=-0.09 (95% CI -0.15, -0.02); cross-sectional NHANES |
| Kazemi M, McBreairty LE, Chizen DR, Pierson RA, Chilibeck PD, Zello GA 2018 · Nutrients | RCT | supports | moderate | Pulse-based diet vs TLC diet in PCOS: greater improvement in insulin response and cardiometabolic measures. |
| Shaygantabar M, Eslamian G, Hekmatdoost A, Takhttavous A, Torkizadeh F, Yazdani AM, Shahabi Nejad S, Sajedi L, Rahmanian R 2025 · Nutr Rev | meta-analysis | supports | high | RCT meta-analysis: non-soy legumes lowered LDL-C and triglycerides, reducing CVD risk markers. |
| Bäck S, Päivärinta E, Pellinen T, Itkonen ST, Lehtovirta M, Erkkola M, Kaartinen NE, Männistö S, Pajari AM 2025 · European journal of nutrition | RCT | supports | moderate | 6-wk RCT: legume-for-red-meat substitution lowered total & LDL cholesterol (both p<0.001) and BMI/weight (p=0.009); no clinical CVD event outcome measured |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
Opens a short form. You'll sign in with Google so submissions are tied to a real account — we don't display your identity, and we only accept a link we can verify (PubMed, DOI, ClinicalTrials.gov).
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.