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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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flaxseed and Reduced Systolic Blood Pressure

Research synthesisLow evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful

All 3 studies (all meta-analyses) report that flaxseed supplementation produces a moderate beneficial reduction in systolic blood pressure. The pooled reductions range from -4.30 mmHg to -8.64 mmHg, with effects observed in clinical populations such as patients with metabolic diseases, cardiovascular risk factors, and hypertension. Dose and duration were not consistently reported, and study durations were not extracted.

  • Studied populations: patients with metabolic diseases, people with cardiovascular disease risk factors, patients with hypertension

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). Dose, form, and study duration were not consistently reported across studies, limiting the ability to make specific dosing recommendations.

Generated May 16, 2026
3 of 3 papers
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