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Yingkai Yang
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Yang, Y. Smartphone Addiction for Body Dissatisfaction and Eating Behaviors. Encyclopedia. Available online: https://encyclopedia.pub/entry/20788 (accessed on 04 May 2024).
Yang Y. Smartphone Addiction for Body Dissatisfaction and Eating Behaviors. Encyclopedia. Available at: https://encyclopedia.pub/entry/20788. Accessed May 04, 2024.
Yang, Yingkai. "Smartphone Addiction for Body Dissatisfaction and Eating Behaviors" Encyclopedia, https://encyclopedia.pub/entry/20788 (accessed May 04, 2024).
Yang, Y. (2022, March 21). Smartphone Addiction for Body Dissatisfaction and Eating Behaviors. In Encyclopedia. https://encyclopedia.pub/entry/20788
Yang, Yingkai. "Smartphone Addiction for Body Dissatisfaction and Eating Behaviors." Encyclopedia. Web. 21 March, 2022.
Smartphone Addiction for Body Dissatisfaction and Eating Behaviors
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This entry is adapted from the peer-reviewed paper 10.3390/nu14061281

A consideration of the roles of smartphone addiction and depression is crucial in order to more fully understand the association between body dissatisfaction and disordered eating behaviors among Chinese college students. The findings indicate that interventions that target smartphone addiction and the various emotions relating to depression could be of great value for mitigating the detrimental effects of body dissatisfaction on disordered eating behaviors.

disordered eating behaviors body dissatisfaction smartphone addiction depression

1. Introduction

Disordered eating behaviors (e.g., restrained eating) are highly prevalent among adolescents and young adults [1]. In a recent survey comprising 14,322 Americans aged between 18 and 24, 19.1% of the participants were found to have engaged in dieting, with another 3.6% having used extreme weight loss methods [2]. A recent national survey reported that the age-standardized prevalence of screen-detected disordered eating in mainland China was estimated to be 7.04% in 2015 and has been increasing over the last decade [3]. More importantly, disordered eating behaviors—even those less severe or frequent than the disorders defined according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria [4]—are associated not only with increased risk of developing eating disorders, but also with other harmful consequences, such as insufficient nutritional intake and significant weight gain over time [1]. Therefore, it is critical to be aware of the factors that contribute to disordered eating behaviors.
Previous studies have identified body dissatisfaction as a risk factor for the development of disordered eating behaviors across different cultures [5][6][7]. Body dissatisfaction refers to the perceived discrepancy between one’s actual body image and one’s ideal body image [8]. Body dissatisfaction is pervasive among college students, since physical appearance—especially with regard to body shape—is a great concern of many at this particular stage of life [7][9]. Previous studies have found that individuals with higher levels of body dissatisfaction are more likely to engage in disordered eating behaviors such as dieting, unhealthy eating and weight control practices [10][11]. However, the exact pathway through which body dissatisfaction influences disordered eating behavior is yet to be clarified.
Body dissatisfaction has been found to be a proximal factor that directly contributes to disordered eating [5]. Specifically, disordered eating behaviors (e.g., strict dieting and restrained eating) may serve as a means of losing weight and eventually achieving the ideal body image. This is especially the case for female young adults, who have a tendency to diet in pursuit of a slimmer body shape due to sociocultural influences [7][12]. Meanwhile, recent reports have suggested that restrained eating is also prevalent among males due to a growing trend for muscle building [13][14].
On the other hand, there has been an accumulation of evidence to suggest that body dissatisfaction may influence disordered eating through certain mediating factors. Among others, negative affectivity (e.g., depression) is a potential candidate for mediating the effect of body dissatisfaction [15]. Negative affectivity has been repeatedly identified as a proximal factor implicated in adolescents’ various disordered eating behaviors [16][17]. For instance, it has been speculatively suggested that both restrained eating and binge eating are triggered by depressive feelings [15] and are a method of distracting oneself from negative self-perceptions or providing immediate emotional relief [18]. Furthermore, the degree of body dissatisfaction in different age groups has been documented as being strongly associated with the severity of depressive symptoms [17][19][20]. For adolescents and young adults, bodily appearance is central to one’s self-evaluation [21], and individuals with high levels of body dissatisfaction may have negative feelings about their own appearance and, accordingly, may anticipate possible negative evaluations from others in social settings [22]. As proposed by the cognitive theories of depression, this negative self-evaluation is central to the development of depression [23]. Accordingly, it is reasonable to hypothesize that depression could mediate the effect of body dissatisfaction on disordered eating behaviors.
Smartphone addiction has also emerged as a potential mediating factor. Recent developments in mobile devices have enabled users to access the internet for a wide range of purposes, at a time and location of one’s own choosing [24][25]. As a result, users have become increasingly preoccupied with their smartphones, which is highly likely to have an impact on their daily lives and health [26]. Recent studies have begun to reveal smartphone addiction as being a predictor of various eating disorders [25][27][28][29]. Unhealthy or excessive mobile phone use may encourage a sedentary lifestyle which in turn may lead to an insufficient intake of healthy food and a high intake of junk food or fast food [30]. In addition, the frequent use of social networks via mobile devices may promote the internalization of certain ideals pertaining to body image, and may motivate an individual to take action in order to achieve these ideals [31]. Unhealthy eating practices—such as restricting food intake—could thus be exacerbated and eventually lead to disordered eating behaviors. Supporting this idea are the findings of Tayhan Kartal and Yabanci Ayhan (2021) [25], who showed that the Smartphone Addiction Test score is positively associated with the Eating Attitude Test-40 (r = 0.277). Furthermore, cellphone addiction has been shown to be a risk factor for various psychological disorders, including depression. For example, A recent meta-analysis showed that problematic smartphone usage was associated with increased likelihood of depression (odds ratio = 3.17), anxiety (odds ratio = 3.05) and higher perceived stress (odds ratio = 1.86) [32]. This further supports the previously stated notion that the association between smartphone addiction and depression may in turn lead to disordered eating behaviors.
Finally, body dissatisfaction has been suggested to have a positive correlation with smartphone addiction among adolescents [8]. According to the cognitive-behavioral model of internet addiction [33], individuals with negative self-evaluation are more vulnerable to addiction in that these individuals aim to elicit positive responses by selectively focusing on and presenting the positive aspects of themselves and/or by seeking reassurance from others in social interactions. As mentioned above, body appearance is of great concern to adolescents and, accordingly, body image is central to their self-evaluation [21]. Similarly, the compensatory satisfaction theory [34] proposes that individuals with high levels of body dissatisfaction tend to use smartphones as a compensatory approach to satisfy their psychological demands, which are difficult to perceive in reality. Consequently, problematic mobile phone use may be repeatedly reinforced by a feeling of satisfaction.

2. Current Insights

The current research examines the association between body dissatisfaction and disordered eating behaviors among Chinese college students. The mediating effects of smartphone addiction and depression on this association were also investigated. The researchers' data demonstrates that body dissatisfaction is positively associated with the disordered eating behaviors of restrained eating, emotional eating and external eating. Consistent with previous studies [6][15], these results confirmed this association to be mediated by depression. Additionally, the researchers were able to show for the first time that body dissatisfaction could impact the three disordered eating behaviors through (a) the mediating effect of smartphone addiction and (b) the serial mediating effect of smartphone addiction and depression.
The mediating role of depression in the relationship between body dissatisfaction and disordered eating behaviors has been previously documented. For example, Cruz-Saez et al. (2020) [6] reported that body dissatisfaction among adolescents was positively correlated with their EDI-2 (Eating Disorder Inventory-2) score and this effect was directly mediated by negative affectivity, including depression. Similarly, Brechan and Kvalem (2015) [15] found that depression was a significant mediator in the relationship of body dissatisfaction with both binge eating and restrained eating in women. Following on from these previous investigations, the research illustrates that depression mediates the influence of body dissatisfaction on restrained eating, emotional eating and external eating in Chinese college students. Specifically, college students with high levels of body dissatisfaction are more likely to experience depression, perhaps due to the considerable discrepancies between perceived body shapes and ideal body shapes that are usually too unrealistic to easily achieve [35]. Depression could, in turn, result in an increased likelihood of disordered eating behaviors, including restrained eating, emotional eating and external eating. According to the transdiagnostic model of eating disorders, disordered eating behaviors can be understood as maladaptive responses for coping with or distracting oneself from distressing emotions [36]. Therefore, it is important to note that the prevention and treatment of eating disorders as well as disordered eating behaviors should incorporate strategies that directly target the regulation of negative emotions.
This research also examined the potential mediating role of smartphone addiction in the relationship between body dissatisfaction and disordered eating. Due to the high prevalence of smartphone use, the etiology and consequences of smartphone addiction have attracted considerable academic interest in recent years. Previous studies have documented the individual associations of smartphone addiction with disordered eating behaviors [25][27][28][37], distressing emotions [38][39] and body dissatisfaction [8][40]. For example, Liu et al. (2020) [8] recently reported that body dissatisfaction could positively predict adolescent smartphone addiction. Problematic smartphone usage was associated with an increased likelihood of depression, anxiety and higher levels of perceived stress, according to a recent meta-analysis research [32]. A longitudinal research covering the period from adolescence to emerging adulthood showed that early problematic cell phone use predicted depression later on [38]. Tayhan Kartal and Yabanci Ayhan (2021) [25] showed that smartphone addiction was positively associated with the Eating Attitude Test-40 scores of college students.
Building upon these prior studies, this research further establishes smartphone addiction as a novel mediator in the association between body dissatisfaction and the three disordered eating behaviors. According to the compensatory satisfaction theory, the problematic use of smartphones could be considered a compensatory strategy to satisfy psychological demands that cannot be met in reality [34][41], because in the virtual world, an individual may temporarily be able to mitigate dissatisfaction by selectively presenting the positive aspects of themselves [42] and constantly seeking reassurance from others [43]. Thus, habitual behaviors are reinforced and, in the long term, the risk of other detrimental behaviors such as disordered eating may be increased.
Smartphone addiction could be directly related to disordered eating behaviors. There are important neurocognitive similarities between addictive behavior (e.g., smartphone addiction) and eating dysregulation (e.g., restrained eating and external eating) [44][45][46][47][48]. For example, both smartphone addiction and disordered eating behaviors are related to higher reward sensitivity [47][49] and impulsivity [50][51]. These shared mechanisms could explain the higher correlations observed between smartphone addiction and the disordered eating behaviors in this research.
In addition, these significant associations between smartphone addiction and disordered eating behaviors could also be a result of an increase in lifestyles based on the adoption of new technologies. Excessive smartphone use may, for example, bring about a reduction in physical activities and encourage a more sedentary lifestyle, which may, in turn, lead to unhealthy eating habits such as skipping meals, excessive fast food consumption and insufficient intake of healthy foods [25][27]. To support these inferences, a systematic review has shown that there is a negative relationship between excessive smartphone use and physical activity [52]. Importantly, individuals with disordered eating behaviors exhibited more sedentary behavior and less physical activity [53].
These data indicate that smartphone addiction could also indirectly influence eating behaviors through depression. The researchers speculate that frequent use of the internet via smartphones may reinforce the internalization of ideal body shapes. However, mainstream ideals are usually very difficult to achieve; thus, depression may be induced in students through social comparison [5]. Finally, as mentioned above, young adults tend to engage in disordered eating behaviors in order to cope with depressive emotions [16].
To summarize, the research has extended the scope of previous research by revealing the novel mediating role of smartphone addiction as well as the serial mediating role of smartphone addiction and depression in the relationship between body dissatisfaction and disordered eating behaviors in Chinese college students. These findings have important clinical implications for the prevention and treatment of restrained eating, emotional eating and external eating, as well as other disordered eating behaviors. It could be proposed that smartphone addiction be included in the conceptualization of disordered eating. Accordingly, strategies that target the management of smartphone usage should be considered and implemented to provide a comprehensive intervention. In addition, interventions might also benefit from a particular focus on the cognitive factors (e.g., body judgments and the internalization of unrealistic physical standards) induced by social media and smartphone use, given that these factors have been shown to mediate the relationship between smartphone use and body-related or eating-related outcomes [54][55].

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