1 Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CR-CHUM), 900 rue Saint-Denis, porte R6-432, Montreal, QC H2X 0A9 Canada.
2 Department of Educational & Counselling Psychology, McGill University, 845 rue Sherbrooke O, Montreal, QC H3A 0G4 Canada.
3 Department of Psychology, Concordia University, 7141 Sherbrooke St. West, Montreal, QC H4B 1R6 Canada.
4 Department of Psychiatry, QEII Health Sciences Centre, Dalhousie University, 5909 Veterans' Memorial Lane, 8th Floor, Abbie J. Lane Memorial Building, Halifax, NS B3H 2E2 Canada.
5 Department of Family Medicine and Emergency Medicine, Université de Montréal, 2900 boulevard d'Edouard Montpetit, Montreal, QC H3T 1J4 Canada.

Since the onset of the COVID-19 pandemic, researchers around the world have made efforts to assess its impact on youth mental health; however, the breadth of this topic has impeded a clear assessment of pandemic outcomes. This study aimed to address this gap by reviewing changes in youth (age = 25) mental health, psychological wellbeing, substance use, and the use or delivery of relevant services during the pandemic. PubMed and Embase were searched in May 2021 to conduct a rapid review of the literature. The results encompass 156 primary publications and are reported using a narrative synthesis. Studies of mental health (n = 122) and psychological wellbeing (n = 28) generally indicated poor outcomes in many settings. Publications regarding substance use (n = 41) noted overall declines or unchanged patterns. Studies of service delivery (n = 12) indicated a generally positive reception for helplines and telehealth, although some youth experienced difficulties accessing services. The findings indicate negative impacts of the pandemic on youth mental health, with mixed results for substance use. Services must support marginalized youth who lack access to telehealth.

Supplementary information: The online version contains supplementary material available at 10.1007/s40894-022-00185-6.