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Depression and Alzheimer's disease (AD) are two prevalent and debilitating conditions that significantly impact millions of people worldwide. Depressive disorders are characterized by persistent feelings of sadness, loss of interest, and impaired cognitive function. AD is a progressive neurodegenerative disorder that is accompanied by cognitive decline, memory loss, and behavioral changes. To date, the pathogenesis of AD and depression has not yet been fully explained. Recent studies have provided insights into the intricate relationship between these two disorders by emphasizing the role of glucose metabolic abnormalities as a potential link. This review explores the bidirectional association between depression and AD, focusing on common pathophysiological mechanisms involving glucose metabolism, such as hypothalamic-pituitary-adrenal (HPA) axis dysregulation, insulin resistance, glucose transporters, and oxidative stress. Understanding the crosstalk between glucose metabolic abnormalities, depression, and AD will open new avenues for therapeutic interventions. Finally, improving glucose metabolism through lifestyle modifications, pharmaceutical interventions or novel therapeutic approaches could provide a promising therapeutic strategy for managing both conditions simultaneously.
Yang et al. (Wed,) studied this question.