New evidence
A meta-analysis tied rice bran to a 13.6 mg/dL drop in total cholesterol — but the evidence is only moderate and the optimal dose remains unknown.
This is the strongest signal so far that rice bran, a cheap and widely available byproduct, might meaningfully lower cholesterol, but with only 5 studies and no specified dose, it's not yet a slam dunk.
Pooling data from 1255 people across 5 studies, researchers found that rice bran supplementation lowered total cholesterol by an average of 13.6 mg/dL, a moderate and statistically significant reduction. However, the body of evidence is still moderate in strength, with mixed effect sizes across individual studies and no clear dosing guidelines — meaning it’s promising but not proven.
Where this fits in the evidence
Pillser has synthesized 7 studies on rice bran for Reduced Blood Cholesterol — overall evidence strength: High.
Across 7 studies, 6 reported beneficial moderate-sized effects of rice bran supplementation on reducing blood cholesterol, with 6 reaching statistical significance. Effects were observed at doses around 30 g/day (most commonly as rice bran oil), and median study duration was 56 days, indicating effects typically observed at 8 weeks. The evidence primarily comes from clinical populations, including individuals with metabolic syndrome, coronary artery disease, or overweight/obesity.
The study
- Meta-Analysis
- n = 1,255
- 2025-09-17
- International journal of molecular sciences
- PubMed: 41009614
- DOI: 10.3390/ijms26189051
- Full study breakdown →
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.