Work

Effect of a mobile phone application for dietary self-monitoring on obesity in adolescents: a pilot randomized controlled trial

Year: 2025

Type: article

Study designs: Randomized Controlled Trial, Clinical Trial

Abstract: BACKGROUND/OBJECTIVES: The global prevalence of obesity among children and adolescents is a growing concern, with significant implications for long-term health outcomes. Traditional weight loss programs focusing on diet and physical activity have shown limited efficacy. This study aimed to assess the impact of the FatSecret mobile application, a dietary self-monitoring tool, on BMI z-score (ZBMI) in adolescents with obesity, alongside clinical and metabolic parameters, body composition, dietary intake, binge eating behaviors, and quality of life. SUBJECTS/METHODS: Sixty adolescents aged 13-17 years with obesity were randomly assigned to either the application group (balanced energy-restricted diet with daily self-monitoring using the FatSecret app) or the control group (balanced energy-restricted diet with a 3-day food record). Both groups were followed for 6 months with monthly consultations, and 34 patients completed the intervention. RESULTS: Both groups experienced significant improvements in ZBMI, body composition, binge eating scores, and insulin levels. Notably, the FatSecret app demonstrated comparable effectiveness to the validated 3-day food record in supporting weight loss and behavioral improvements. While the control group reported a greater increase in polyunsaturated fat intake, the app group showed significant improvements in pain-related quality of life scores. Adherence to dietary monitoring and dropout rates were similar between groups. CONCLUSION: The use of a mobile phone application demonstrated effectiveness comparable to the traditional, validated 3-day food record in promoting weight loss and metabolic improvements among adolescents with obesity. These findings support its use as a practical alternative for dietary self-monitoring.

Source: European Journal of Clinical Nutrition

DOI: 10.1038/s41430-025-01676-0