This study aimed to evaluate positive mental health (PMH) and its relation with sociodemographic characteristics, mental health literacy, and the psychological vulnerability scale (PVS) in Portuguese university students aged 17 to 62. A descriptive correlational study was carried out. An online survey was conducted to evaluate demographic variables, and several questionnaires were applied to evaluate positive mental health, psychological vulnerability, and mental health literacy. The data was collected from 1 November 2019 to 1 September 2020. Overall, 3405 students participated in the study. The results show that 67.8% of students revealed a high level of PMH, 31.6% presented a medium level of PMH, and 0.6% had a low level of PMH. Male students reported higher personal satisfaction (t (3170) = −2.39, p = 0.017) and autonomy (t (3170) = −3.33, p = 0.001) in PMH compared to female students. Students without a scholarship scored higher (t (3127) = −2.04, p = 0.42) in PMH than students who held a scholarship. Students who were not displaced from their home reported higher (t (3170) = −1.99, p = 0.047) self-control in PMH than those displaced from their home. University students with higher PMH results had lower PVS results and higher literacy results. The findings of this study will contribute to identifying students’ PMH intervention needs.

Mental health first aid programs are interventions to empower the community to help people with mental health problems/crises. A review of these programs was conducted in accordance with the guidelines of the Joanna Briggs Institute. Published and unpublished works from 2009 to 2019 were considered. The review included 252 studies. Several Mental Health First Aid programs were identified, with varying characteristics, participants, and contexts of implementation. These group interventions were carried out among lay people to health professionals, and in adolescents to the elderly. Additionally, they were conducted in-person and/or virtually, using psychoeducational methods and informational materials. The programs ranged from 30 minutes to 24 hours. These interventions can address nursing foci, and the characteristics of the facilitators are similar to those of mental health nurses. Therefore, this review highlighted the opportunity for nurses to explore Mental Health First Aid programs.