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    Ingredient guide · Ingredient reference

    Vitamin E in PIVENS: improved liver histology did not mean fibrosis reversal

    PIVENS found a benefit on its composite liver-histology outcome in selected adults without diabetes. Fibrosis scores did not significantly improve.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    Evidence and findings

    The trial randomized 247 adults with nonalcoholic steatohepatitis to vitamin E, pioglitazone or placebo for ninety-six weeks. Vitamin E improved the primary histologic outcome in 43 percent versus 19 percent with placebo. [1]

    Liver enzymes and some inflammatory or fat-related histology measures improved, but the fibrosis comparison was not significant. The trial’s prespecified significance threshold also mattered when interpreting its two primary comparisons. [1]

    Interpretation and limits

    This population does not represent every person with fatty liver, diabetes or cirrhosis. NIH grants are listed in the retrieved record; complete funding and conflict disclosures were not established from the abstract. The trial does not provide a universal self-treatment regimen. [1]

    A hypothetical distinction

    Imagine a composite outcome improves through several components while fibrosis does not. Calling that result fibrosis reversal would misstate the evidence.

    Evidence summary — Vitamin E in PIVENS
    DetailInterpretation
    Composite improvementDefined trial outcome
    FibrosisSeparate nonsignificant result
    Other populationsNeed separate evidence
    Vitamin E in PIVENS: improved liver histology did not mean fibrosis reversal — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitis - PubMed
      Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.