Mental Health of Students at Polish Universities after Two Years of the Outbreak of COVID-19.

1. Of the students surveyed, 33% reported elevated stress levels after two years of the COVID-19 pandemic. 2. The overall mental health of students at Polish universities, as measured by GHQ-28, was significantly worse in the group evaluated after two years of the COVID-19 pandemic, mainly in respect of anxiety symptoms and sleep disorders. 3. Female gender and professional inactivity appeared to be risk factors for the students' worsening mental health, which may be an indication of the need for further research and planning of psychotherapeutic interventions.