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Evidence-Based Supplement Research
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Myth-buster

385-person meta-analysis found kefir lowered systolic blood pressure by 1.76 mmHg — a change that was not statistically significant.

This contradicts the popular belief that kefir reliably lowers blood pressure; but because it's among the first indexed analyses on this pairing, the picture is now contested rather than settled.

A meta-analysis of randomized controlled trials on kefir found no significant reduction in systolic blood pressure, diastolic blood pressure, or C-reactive protein (a marker of inflammation) across 385 adults. There was a hint that longer-term intake (8 weeks or more) might lower CRP, but the main results were null, meaning the evidence so far doesn't support kefir as a blood-pressure-lowering food for the general population.

Where this fits in the evidence

This is among the first studies we've indexed on Kefir for Reduced Systolic Blood Pressure — treat it as an early signal until more research accumulates.

The study

The Effect of Kefir Consumption on Blood Pressure and C-Reactive Protein: A Systematic Review and Meta-Analysis of Randomised Controlled Trials.

  • Meta-Analysis
  • n = 385
  • 2025-11-01
  • Endocrinology, diabetes & metabolism
More on KefirMore on Reduced Systolic Blood Pressure

This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.

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