Evidence Stack
Search
Back to database
4/5 Strong evidence

Heart health evidence brief

Oat beta-glucan

Oat beta-glucan reliably lowers LDL cholesterol when enough viscous soluble fiber is consumed, especially as part of a heart-healthy diet.

Strong for LDL lowering health 6 linked sources Content audit 2026-05-05

Headline Finding

Meta-analysis: oat beta-glucan lowered LDL cholesterol, with clinical guidance commonly using about 3 g/day from oats or barley.

Dose Context

Aim for about 3 g/day oat or barley beta-glucan from foods or a tested fiber product; viscosity and processing can affect the response.

Important Caveat

This is a cholesterol-marker intervention, not a replacement for lipid medication when medication is indicated.

Source Drawer

Linked Research

6 papers and evidence links - audit 2026-05-05
  1. Meta-analysis LDL meta-analysis PubMed
  2. Meta-analysis LDL/non-HDL/apoB meta-analysis
  3. Review EFSA health claim opinion
  4. Review US soluble fiber health claim
  5. Trial Borderline cholesterol RCT
  6. Meta-analysis Hypercholesterolemia meta-analysis

How To Read This Rating

The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.

Spot An Evidence Issue?

Send the disputed claim, source link, and why it changes the practical verdict. Corrections that materially affect the claim, dose, caveat, or rating are prioritized.

Report a source or rating issue