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Evidence-Based Supplement Research
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Beetroot and Reduced Diastolic Blood Pressure

Research synthesisLow evidenceSmall effect3 studies · 2 beneficial · 1 neutral · 0 harmful

Across 3 studies, 2 reported beneficial effects on diastolic blood pressure, with effect sizes ranging from small to moderate. A large meta-analysis (75 RCTs, 1823 participants) found a small but significant dose-dependent reduction in diastolic BP (WMD: -0.12 mmHg per mmol increase in nitrate intake), and a smaller RCT (15 healthy males) observed a moderate reduction (mean -6 mmHg) with 140 ml nitrate-rich beetroot juice. One meta-analysis in adults with obesity found no significant effect, suggesting benefits may vary by population.

  • Effective dose range: 140 ml nitrate-rich beetroot juice (~14.0 mmol nitrate) per dose, with dose-response effects observed from 0.12 mmHg reduction per mmol increase in nitrate intake
  • Studied populations: clinical populations (from meta-analysis of 75 RCTs); healthy adult males (from single RCT); no significant effect observed in adults with obesity

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Different populations showed divergent results: the largest analysis suggests small effects, but a meta-analysis in adults with obesity found no benefit. Effect sizes varied from small to moderate, and study durations were not consistently reported, limiting the ability to assess long-term effects.

Generated Jun 9, 2026
Doses used in studies
  • Beetroot Juice · ml single-dose: 140 (median 140, IQR 140–140) — 1 study
3 of 3 papers
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