Objective: Anhedonia, or loss of pleasure, is related to deficits in reward processing across a variety of psychiatric disorders. In light of research suggesting abnormal reward processing in eating disorders (EDs), the study of anhedonia in EDs may yield important insights into the role of reward in eating pathology. This meta-analysis and review aimed to provide both a quantitative and qualitative synthesis of the existing literature on this topic. Method:We conducted this research (or these meta-analyses) according to PRISMA guidelines. We searched four databases for both peer-reviewed and unpublished literature, and included studies only if a self-report or clinical interview measure of anhedonia was administered to a sample with an ED diagnosis. Results:We included 21 studies in the systematic review, and 10 studies in two meta-analyses that compared anhedonia between ED and control samples (n = 9 studies) and within different ED diagnoses (n = 5 studies). Meta-analyses revealed that anhedonia was significantly higher in ED groups compared to healthy controls, but there was no significant difference in anhedonia between ED diagnostic groups.A qualitative review of the literature also suggested that anhedonia may be correlated with increased ED symptom severity.Discussion: Findings indicated that anhedonia is elevated in EDs and may be a relevant treatment target. Future research should examine how self-reported anhedonia may correlate with components of reward processing in EDs in order to improve theoretical models as well as targeted interventions. ResumenObjetivo: La anhedonia, o pérdida de placer, está relacionada con déficits en el procesamiento de recompensas en una variedad de trastornos psiquiátricos. A la luz de la investigaci on que sugiere una anormalidad en el proceso de la recompensa en los trastornos de la conducta alimentaria (TCA), el estudio de la anhedonia en los TCA puede producir informaci on importante sobre el papel de la recompensa en la patología alimentaria. Este metanálisis y revisi on tuvo como objetivo proporcionar una síntesis cuantitativa y cualitativa de la literatura existente sobre este tema.Erin E. Reilly and Kamryn T. Eddy shared senior authorship.