Online mindfulness program reduced anxiety and depression in undergraduate students

Compared with controls, the intervention group showed significant improvements across all primary outcomes: positive mental health improved substantially, anxiety symptoms decreased, and depression scores fell (all p < 0.001). Secondary outcomes also favored the intervention, with increases in sense of coherence, resilience, and mindfulness practices, alongside reductions in perceived stress (all p < 0.05). The effect sizes were clinically meaningful—the program demonstrated simultaneous benefits across both positive mental health measures and symptom reduction. The findings suggest that scalable, online mindfulness interventions delivered at low cost may serve as effective preventive mental health strategies in higher education, where access to in-person care is often limited, particularly in low- and middle-income settings.

The trial's strength lies in its large sample size and rigorous randomized design with intention-to-treat analysis, though the 32% dropout rate suggests some participants found the online format challenging—a limitation worth noting for real-world implementation. Notably, the intervention worked across multiple domains simultaneously: it didn't just reduce symptoms (anxiety and depression) but also built positive capacities (resilience, sense of coherence, and mindfulness skills), suggesting a mechanism of psychological strength-building rather than symptom suppression alone. Secondary outcomes showed all measures favored the intervention (p < 0.05), including perceived stress reduction, which may be a mechanism driving the anxiety and depression improvements. The timing matters too—university is a high-stress period when preventive mental health tools are especially valuable, and the low cost and online accessibility make this scalable to settings where therapist availability is scarce.