Abstract Background Visual and appearance-based social media platforms like TikTok can establish unrealistic beauty standards and self-esteem issues, leading to the development of eating disorders (EDs). This study aims to evaluate the association between TikTok usage and the presence of EDs risk behaviors and body dissatisfaction among Colombian young adults aged between 18 and 25 years. Methods A cross-sectional descriptive study was conducted via an online survey through snowball sampling with 171 participants. The survey assessed demographic variables, social media use, content consumption, EDs risk behaviors, and body dissatisfaction through validated tools. Non-parametric tests and regression models were used for the data analysis. Results TikTok users showed significantly higher scores in ED risk behaviors (M = 14.91) and body dissatisfaction (M = 21.9) compared to non-users. Contributory usage, particularly collaborative content creation, was the most associated with increased risk. The multivariate regression model for ED risk explained 3% of the variance, while TikTok use accounted for 30% of the variance in the model for body dissatisfaction. Discussion Our study found a significant association between TikTok use and the development of ED risk behaviors and body dissatisfaction. These findings align with previous research and highlight the need for interventions that encourage mindful social media consumption.