The transition to university life represents a critical window for mental health development, yet researchers have lacked comprehensive data on how lifestyle factors interact with psychological wellbeing across diverse cultural contexts. Most existing studies examine isolated behaviors at single time points, missing the complex interplay between diet, exercise, sleep, and mental health symptoms as they evolve during these formative years.

The UNILIFE-M cohort will follow approximately 20,700 students across 69 universities in 28 countries for 3.5 years, beginning at enrollment. Participants complete detailed assessments covering seven mental health domains—including depression, anxiety, mania, and substance abuse—alongside eight lifestyle categories spanning diet quality, physical activity patterns, stress management techniques, and social support networks. The protocol captures both baseline characteristics and longitudinal changes across multiple academic years.

This ambitious design addresses significant gaps in university mental health research. Previous studies typically focused on single institutions or specific populations, limiting generalizability across cultural and socioeconomic contexts. The multicultural scope allows researchers to identify universal versus culture-specific risk factors for mental health deterioration during university years. The comprehensive lifestyle assessment moves beyond traditional risk factors to examine protective behaviors like restorative sleep practices and environmental factors. However, the study relies on self-reported data, which introduces potential bias, and the observational design cannot establish causation between lifestyle patterns and mental health outcomes. Despite these limitations, the scale and duration represent a substantial advancement in understanding how modifiable lifestyle factors influence mental wellbeing during a vulnerable developmental period.