4.6 Article

Chronic stress is associated with reward and emotion-related eating behaviors in college students

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FRONTIERS IN NUTRITION
卷 9, 期 -, 页码 -

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FRONTIERS MEDIA SA
DOI: 10.3389/fnut.2022.1025953

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chronic stress; food odor perception; emotion-related eating; reward-related eating; food preference

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This study investigated the association between chronic stress, food reward, and perception of food and non-food odors. The results showed that chronic stress was associated with emotional eating and reward-related eating, and was negatively correlated with liking for low-calorie sweet foods.
IntroductionStress is related to altered olfactory perception and eating behaviors. The current study investigated the association between chronic stress, food reward and perception of food and non-food odors among college students. MethodsSixty-one participants completed the Perceived Stress Scale (PSS) and the Brief Daily Stressors Screening Tool (BDSST). The detective threshold and suprathreshold perception (pleasantness, intensity, and familiarity) of two food (chocolate, strawberry) odors and a non-food (rose) odor were measured. Food reward and macronutrient preference were measured using the computerized Leeds Food Preference Questionnaire and the Macronutrient and Taste Preference Ranking task, respectively. Reward-related eating, emotional eating and eating-related inhibitory control were measured by the Dutch Eating Behavior Questionnaire (DEBQ) and the Reward-Based Eating Drive Scale (RED) scales. ResultsNeither the perceived stress or the severity of daily life stressor exposure was related to odor sensitivity, however, the PSS score was significantly correlated with pleasantness for strawberry odor (r = 0.329, p = 0.013). Chronic stress (PSS and BDSST scores) was significantly correlated with the DEBQ emotional eating and reward-related eating measured by RED (all ps < 0.01). Moreover, the BDSST score was negatively correlated with subjective liking for low-calorie sweet foods (r = -0.46, p < 0.001). DiscussionTogether, our preliminary results suggest disassociated effect of chronic stress on odor perception and eating behaviors.

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