TV exposure, attitudes about targeted food ads and brands, and unhealthy consumption by adolescents: Modeling a hierarchical relationship

Public health experts raise concerns that extensive exposure to advertising for calorie-dense nutrient-poor food negatively influences adolescents' diets, but few studies have explored how food advertising affects children over age 12. This study examines adolescents' attitudes about highly targeted unhealthy food brands and assesses the hierarchical relationship between TV exposure, intermediary measures of advertising effects, and healthy and unhealthy food consumption. A cross-sectional online survey of 1566 adolescents (13-17 years) measured TV exposure, attitudes about eight highly advertised teen-targeted food brands and their advertising, and unhealthy and healthy food consumption. A theory-based structural equation model (SEM) tested hypothesized paths from TV exposure to unhealthy food consumption, with attitudes about teen-targeted TV ads and brands as intermediary variables, controlling for healthy food consumption and demographic characteristics. Participants reported high liking of targeted-brand advertising (M = 4.05/5.0, SD = 0.65), strong perceptions that the ads were targeted to someone like them (M = 4.07/5.0, SD = 0.66), positive brand attitudes (M = 4.07/5.0, SD = 0.56), brand popularity (M = 4.01/5.0, SD = 0.63), and consuming the brands a few times in the past month on average. As hypothesized, the SEM supported significant positive paths from TV exposure to ad attitudes (β = 0.50, 95% CI = 0.40-0.60) to brand attitudes (β = 0.90, 95% CI = 0.87-0.92) to unhealthy food consumption (β = 0.41, 95% CI = 0.32-0.50). Contrary to expectations, healthy consumption was positively associated with both brand attitudes (β = 0.11, 95% CI = 0.04-0.18) and unhealthy consumption (β = 0.42, 95% CI = 0.33-0.51). These results further public health concerns about the potential impact of adolescents' exposure to unhealthy food advertising on brand consumption and unhealthy food consumption more broadly. They also support marketing theories that ad liking and perceived targeting may increase the influence of ad exposure on brand attitudes and unhealthy consumption.

An Exploration of the Role of Sugar-Sweetened Beverage in Promoting Obesity and Health Disparities

PURPOSE OF REVIEW

The mechanistic role of sugar-sweetened beverage (SSB) in the etiology of obesity is undetermined. We address whether, compared to other foods, does consumption of SSB (1) automatically lead to failure to compensate for the energy it contains? (2) fail to elicit homeostatic hormone responses? (3) promote hedonic eating through activation of the brain's reward pathways? We followed the evidence to address: (4) Would restriction of targeted marketing of SSB and other unhealthy foods to vulnerable populations decrease their prevalence of obesity?

RECENT FINDINGS

The data are lacking to demonstrate that SSB consumption promotes body weight gain compared with isocaloric consumption of other beverages or foods and that this is linked to its failure to elicit adequate homeostatic hormone responses. However, more recent data have linked body weight gain to reward activation in the brain to palatable food cues and suggest that sweet tastes and SSB consumption heightens the reward response to food cues. Studies investigating the specificity of these responses have not been conducted. Nevertheless, the current data provide a biological basis to the body of evidence demonstrating that the targeted marketing (real life palatable food cues) of SSB and other unhealthy foods to vulnerable populations, including children and people of color and low socioeconomic status, is increasing their risk for obesity. While the mechanisms for the association between SSB consumption and body weight gain cannot be identified, current scientific evidence strongly suggests that proactive environmental measures to reduce exposure to palatable food cues in the form of targeting marketing will decrease the risk of obesity in vulnerable populations.