Friday, Jul 24, 2026 The claims desk. Receipts included. POWERED BY LENZ ↗
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SCIENCE

The Claim

Condensed tannin reduces intestinal damage and mitochondrial dysfunction caused by high-fat diets in largemouth bass (Micropterus salmoides).

Verified by Lenz ·

The Short Version

Evidence from one high-quality study shows condensed tannin lessened intestinal injury and improved mitochondrial metrics in largemouth bass on a high-fat diet, matching the claim. Independent replication in the same species and diet is lacking, and related research suggests dose- or species-dependent risks. Overall, the finding is reliable but not yet firmly established.

Caveats

  • Supported by only a single published experiment; broader replication is absent.
  • Protective effects may depend on tannin dose and could reverse in other fish species or conditions.
  • Claim omits uncertainty by presenting preliminary evidence as established fact.

The Receipts

  1. Condensed tannin ameliorates intestinal damage and mitochondrial dysfunction induced by high-fat diets in largemouth bass (Micropterus salmoides) - PubMed

    PubMed

  2. Condensed tannin ameliorates intestinal damage and mitochondrial dysfunction induced by high-fat diets in largemouth bass (Micropterus salmoides)

    PubMed

  3. Condensed tannin improves growth and alleviates intestinal inflammation of juvenile largemouth bass (Micropterus salmoides) fed with high cottonseed protein concentrate diet

    PubMed

  4. Rosiglitazone Ameliorates Adverse Effects of High-Fat Diet in Largemouth Bass (Micropterus salmoides): Modulation of Lipid Metabolism, Antioxidant Capacity, Inflammatory Response, and Gut Microbiota

    PMC

  5. Dietary hydrolysable tannin improves intestinal health of largemouth bass (Micropterus salmoides): insights from NF-κB signaling pathway and arachidonic acid metabolism

    PubMed

  6. A High Starch Diet Alters the Composition of the Intestinal Microbiota of Largemouth Bass Micropterus salmoides, Which May Be Associated With the Development of Enteritis

    PMC

  7. Dietary hydrolysable tannin improves intestinal health of largemouth bass (Micropterus salmoides): insights from NF-κB signaling pathway and arachidonic acid metabolism - PMC

    PMC

  8. 18β-Glycyrrhetinic acid mitigates adverse effects of high-fat diets on liver fibrosis in largemouth bass (Micropterus salmoides) by reducing mitochondrial Ca2+ level - PMC

    PMC

  9. Mechanisms of high-glucose-induced mitochondrial damage and glycolipid accumulation in largemouth bass - PMC

    PMC

  10. Rosiglitazone Ameliorates Adverse Effects of High-Fat Diet in Largemouth Bass (Micropterus salmoides): Modulation of Lipid Metabolism, Antioxidant Capacity, Inflammatory Response, and Gut Microbiota - PMC

    PMC

+ 8 more sources — see the full list on Lenz

Filed Under

Condensed TanninHigh-Fat DietsLargemouth Bass