“What I Eat in a Day”: The Effect of Social Media’s Diet Messaging on Body Image and Dieting Intentions

Negative body image is a widespread phenomenon among women in Western cultures. Appearance-related social media trends such as “thinspiration” and “fitspiration” have been found to be related to poor body image, and recent research suggests that food-related social media may also impact women’s body dissatisfaction, though this literature is in its infancy. The current study examined the impact of diet- and food-related social media among undergraduate women. Participants (N = 256) were randomized to view either “What I Eat in a Day” (WIEIAD) or interior design TikTok videos, with or without a depiction of a “thin-ideal” body. They completed measures of body image before and immediately after viewing the video, and a measure of dieting intentions after viewing. Results indicated a worsened body image among those who watched WIEIAD videos depicting thin-ideal bodies, which was significantly greater than the change reported by those who viewed either interior design videos (with or without thin-ideal bodies depicted). This finding suggests a possible detrimental effect of WIEIAD videos on body image; however, they did not appear to affect dieting intentions, as no significant group differences were found in this outcome between WIEIAD and interior design video groups. Considering WIEIAD videos are common across social media platforms, it is important for young women to be aware of the potential adverse impact of the social media they are exposed to.