ObjectiveCardiovascular disease (CVD) is the leading cause of death in severe psychiatric disorders (depression, schizophrenia). Here, we provide evidence of how the effects of oxidative stress on fatty acid (FA) and one-carbon (1-C) cycle metabolism, which may initially represent adaptive responses, might underlie comorbidity between CVD and psychiatric disorders.MethodWe conducted a literature search and integrated data in a narrative review.ResultsOxidative stress, mainly generated in mitochondria, is implicated in both psychiatric and cardiovascular pathophysiology.