Role and mechanisms of ferroptosis in cognitive impairment: From molecular pathways to therapeutic targets (Review)

Cognitive impairment remains an important global health concern, with the molecular mechanisms regulating its progression being a primary research focus. Ferroptosis, a unique form of programmed cell death characterized by iron‑dependent lipid peroxidation, has been increasingly recognized for its essential role in the progression of various neurodegenerative diseases and diabetes‑associated cognitive impairment. The present review summarizes current evidence on how ferroptosis contributes to cognitive decline and outlines its regulation through lipid, iron and glutathione metabolism; it further discusses how diverse upstream pathologies converge on ferroptosis as a shared mechanism underlying cognitive dysfunction. In addition, recent advances in ferroptosis‑related biomarkers and therapeutic strategies are highlighted, with the aim of providing a clearer framework for understanding its pathogenic roles and guiding future clinical translation.