From Exposure to Dysfunction: The Intestinal Toxicity of Per- and Polyfluoroalkyl Substances.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanistic and preclinical research without systematic methodology or primary human data.
PubMed 41600588 · doi:10.3390/toxics14010039
What was done
This narrative review synthesized recent literature examining the mechanisms by which per- and polyfluoroalkyl substances (PFAS) exert toxicity in the gastrointestinal tract, focusing on epithelial barrier integrity, metabolic pathways, and gut microbiota.
What was found
The abstract reports no numerical data or quantitative effect sizes. Qualitatively, the review reports that PFAS exposure downregulates tight-junction proteins, induces oxidative stress, activates inflammasome signaling, causes metabolic reprogramming, and drives gut microbial dysbiosis, potentially increasing susceptibility to chronic intestinal inflammation and metabolic disorders.
Why it matters
It maps the interrelated biological mechanisms through which persistent environmental PFAS contaminants may compromise gut barrier function and contribute to inflammatory bowel diseases.
Limits
As a narrative review, it lacks a systematic search protocol and does not report sample sizes, specific study counts, or quantitative human exposure-response thresholds.
Cited by
- supports PFAS compounds (forever chemicals) are linked to hormone disruption, gut microbiome disruption, and fertility issues.