Loneliness and cravings for sugar-sweetened beverages among adolescents

The role of emotion in eating behavior and decisions

The present paper aims to provide the latest perspectives and future directions on the association between emotions and eating behavior. We discussed individual differences in the impact of negative emotions on eating, emotional eating as disinhibited eating decisions with heightened reward values of and sensitivity to palatable foods in response to negative emotions and social isolation, in addition to emotional eating as maladaptive coping strategies under negative emotion and stress, hedonic (pleasure-oriented) eating decisions mediated by the brain reward system, and self-controlled (health-oriented) eating decisions mediated by the brain control system. Perspectives on future directions were addressed, including the development of early eating phenotypes in infancy, shared neural mechanisms mediated by the ventromedial prefrontal cortex and the dorsolateral prefrontal cortex in emotion and eating decision regulation, possible roles of interoception incorporating hunger and satiety signals, gut microbiome, the insula and the orbitofrontal cortex, and emotional processing capacities in hedonic eating and weight gain.

Consumer loneliness: A systematic review and research agenda

Treading on the heels of the spread of the coronavirus, the "loneliness virus" has been capturing territories globally. Consumers are not immune to loneliness. Although academics and the general public have recognized the devastating effects of loneliness, the academic attention given to consumer loneliness (CL) is scattered and fragmentary. The purpose of this article is to systematically review the antecedents (predictors and alleviators) and consequences (consumer behaviors, emotions, preferences, attitudes, and cognition) of CL in various consumption contexts. This review also presents findings on CL as a mediator and moderator in consumer studies. This work adds to the growing body of CL literature by synthesizing the existing findings and knowledge. More importantly, we present a future research agenda by linking CL to significant research lines and detailed implications for practitioners in the marketplace.

An experimental investigation of the affect regulating properties of sugar consumption: Examining the roles of socially-oriented positive and negative affect

Obesity is a major public health concern, and sugar consumption is a key risk factor for obesity. Thus, there is a need to identify factors that may increase motivation to consume sugar. One such factor may be negative affect, as research has shown that negative affect increases motivation for and engagement in appetitive behaviors, including sugar consumption. The goal of the present study was to extend past research on the role of negative affect in sugar consumption by examining: (a) the effect of a socially-oriented negative affect induction (i.e., social rejection) on the consumption of flavored beverages with varying levels of sugar, and (b) the negative and positive affect regulating properties of varying levels of sugar consumption. Undergraduate students (N = 116) were randomized to receive either a neutral or socially-oriented negative affect induction. Participants were then presented with three flavored beverages with varying levels of sugar (low, medium, high). Negative and positive affect were assessed prior to and following the affect induction procedure, as well as following consumption of the beverage. Participants exposed to the negative affect induction consumed a larger volume of the high sugar beverage (as well as a larger volume of all sugary beverages) relative to participants in the neutral induction condition. Moreover, these findings could not be attributed to a greater preference for the high sugar beverage among participants in the negative affect condition. Additionally, lower levels of positive affect post-induction across all participants (regardless of condition) were associated with greater consumption of the high sugar beverage, and high sugar beverage consumption was significantly positively associated with post-consumption positive affect. Results provide evidence for an affect-regulating function of sugar consumption following social rejection.

The Use of Mobile-Based Ecological Momentary Assessment (mEMA) Methodology to Assess Dietary Intake, Food Consumption Behaviours and Context in Young People: A Systematic Review

Mobile-based ecological momentary assessment (mEMA) offers a novel method for dietary assessment and may reduce recall bias and participant burden. This review evaluated mEMA methodology and the feasibility, acceptability and validity as a dietary assessment method in young people. Five databases were searched from January 2008 to September 2021 for studies including healthy young people aged 16–30 years and used mEMA for obtaining dietary intake data, food consumption behaviours and/or contextual factors. Data on the method used to administer mEMA, compliance with recording and validation were extracted. A total of 46 articles from 39 independent studies were included, demonstrating a wide variation in mEMA methods. Signal-contingent prompting (timed notification to record throughout the day) was used in 26 studies, 9 used event-contingent (food consumption triggered recordings), while 4 used both. Monitoring periods varied and most studies reported a compliance rate of 80% or more. Two studies found mEMA to be burdensome and six reported mEMA as easy to use. Most studies (31/39) reported using previously validated questions. mEMA appears to be a feasible and acceptable methodology to assess dietary intake and food consumption in near real time.