When tasty becomes threatening: a neurobehavioral perspective on subjective food preferences in eating disorders
Abstract
Subjective food preferences significantly influence eating behavior, and in eating disorders (EDs), these preferences are often altered. Neuroimaging and neurobehavioral studies have revealed atypical brain responses to food cues in anorexia nervosa (AN), bulimia nervosa (BN), and binge eating disorder (BED), and these findings may point to disrupted subjective food valuation as a key neurobiological mechanism. This narrative review synthesizes recent findings suggesting that altered reward processing and valuation contribute to the persistence and complexity of disordered eating behaviors. The review is based on a comprehensive search of PubMed and additional citation searching, with study selection guided by conceptual relevance to subjective food valuation, reward processing, and decision-making in EDs. The review begins by outlining the conceptual foundations of subjective valuation and preference formation, followed by empirical evidence of altered reward processing and neural correlates of food valuation in AN, BN, and BED. Studies in clinical populations showing disrupted reward learning and maladaptive food choices are integrated to illustrate disorder-specific patterns. Across EDs, converging evidence indicates disorder-specific alterations in subjective food valuation and reward processing. While AN is characterized by reduced hedonic valuation, diminished reward responsiveness, and increased reliance on cognitive control mechanisms, BN and BED are more strongly…
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