Limited Nrf2 activation and heterogeneous thyroidal effects in a 424-compound multi-assay screen call for rigorous testing of purported antioxidant and health-promoting supplements. - Psarias G; Ziros PG; Mageiropoulou A; Chartoumpekis DV; Habeos GI; Alomair BM; Duntas L; Trougakos IP; Sykiotis GP (Redox biology, 2026)