Latest evidence update: 2025-07-31
Strongest in Consistency (87). Held back by Recency (37).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Hundreds of participants; meaningful but not large.
Studies agree on direction of effect.
Evidence base skews older; field may have moved on.
No per-outcome numbers yet for this one. Each finding's direction and strength is shown in the research below.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Baker's yeast beta-glucan reduces the incidence of upper respiratory tract infection symptoms.
High molar mass oat beta-glucan reduces gastric mucosal damage in chronic gastritis.
Oat beta-glucan modestly lowers diastolic blood pressure and VLDL cholesterol in overweight adults.
A beta-glucan, inositol and digestive-enzyme blend eases abdominal pain, bloating and flatulence in irritable bowel syndrome.
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Oat beta-glucan does not meaningfully lower HbA1c or fasting glucose.