Addictive Properties of Ultra-processed Foods? A Review of the Evidence for Hyper-palatable Formulations and Eating Behavior

Abstract

The pervasive consumption of ultra-processed foods (UPFs) and their potential addictive properties have emerged as a critical public health challenge, necessitating a comprehensive synthesis of the evidence. This review aims to consolidate the growing body of research linking hyper-palatable UPF formulations to addictive-like eating behaviors, thereby addressing a significant gap in understanding their impact on individual and societal health. This review examines the neurobiological basis of hedonic eating, including the activation of reward pathways akin to substance use disorders, and outlines standardized definitions for identifying hyperpalatable food formulations. It explores the behavioral and psychological dimensions of UPF consumption, such as links to stress, mental health, and food addiction. Epidemiological evidence connecting UPF intake to chronic diseases like obesity, metabolic syndrome, and inflammatory conditions is summarized, alongside clinical correlates that highlight overlaps between UPF addiction and eating disorders. Key intervention studies assessing the effects of UPF diets on energy intake, weight gain, and body composition are analyzed. The development and utility of assessment tools for UPF addiction and withdrawal are discussed. Finally, the environmental, societal, and policy influences that drive UPF consumption and complicate public health responses are reviewed. Future research should prioritize longitudinal and mechanistic studies to clarify the causal pathways through which UPFs exert addictive and metabolic effects. There is also a pressing need to develop and evaluate integrated policy, clinical, and public health strategies aimed at mitigating the individual and societal burdens associated with UPF consumption.