In mouse studies, the prebiotic Aspergillus oryzae found in miso soup reduced the risk of colitis.
Notes on verification
Confirmed by peer-reviewed mouse studies (iScience 2021/2022, J-STAGE 2014) showing A. oryzae's prebiotic components suppress DSS-induced colitis via increased Bifidobacterium pseudolongum. However, studies used purified/heat-killed spores or fermented extracts, not miso soup directly, and findings are limited to mice, not confirmed in humans. [tier=silver indep_score=1.0 clusters=2 claim_tier=notable]
Sources
- Is Miso Soup Good for You? Benefits, Nutrition & Risks - WebMD (seed:health_and_medicine)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8991515/ (corroboration)
- https://www.sciencedirect.com/science/article/pii/S266656622100054X (corroboration)