Study: Fungicide Fludioxonil and Its Breakdown Products Linked to Oxidative Stress in Humans and Wildlife A study published June 3, 2026 in PeerJ by researchers from the University of Wisconsin-Madison and the University of Pisa finds that the fungicide fludioxonil and its breakdown products, including a per- and polyfluoroalkyl substance (PFAS), induce oxidative stress in living organisms. According to the study, fludioxonil can exhaust levels of glutathione, an antioxidant that the authors described as ‘the master antioxidant in animals, plants and fungi,’ and its ultraviolet (UV)-degraded byproducts become approximately 100-fold more toxic than the parent compound. The findings raise concerns…

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