This study will test whether adding peer support and online education can help college students manage their weight and improve their mood: we plan to enroll 300 full-time university students and randomly assign them to one of three six-month groups (monthly in-person health talks and weekly emailed tips alone; those activities plus biweekly peer-mentor meetings and an online chat group; or those activities plus a custom app delivering weekly lessons, monthly expert live Q\&A, and self-tracking tools). We will measure weight, body mass index (BMI), and scores on standard questionnaires for depression (PHQ-9), anxiety (GAD-7) and life satisfaction (SWLS) at baseline, three months and six months to compare the effectiveness of each approach. By identifying which combination of face-to-face support and digital tools produces the greatest improvements, we aim to inform low-cost, scalable programs to help students maintain a healthy weight and emotional well-being.
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Change in Body Weight
Timeframe: Baseline and Month 6 (6 months)