Change in University Student Health Behaviours after the Onset of the COVID-19 Pandemic

Introduction: The COVID-19 pandemic has caused many disruptions in the lives of the population. In particular, the health behaviours of university students were impacted. Thus, the aim of this study was to evaluate the evolution of these behaviours from before the COVID-19 period to May 2021, during which lockdowns or curfews were in effect. Methods: Two retrospective online cross-sectional studies were conducted among university students in Normandy in May 2020 and May 2021. Socio-demographics and academic characteristics were collected. Tobacco smoking, binge drinking, cannabis use, and moderate and vigorous physical activity were collected for the 4 weeks before the COVID-19 lockdown in May 2020 and in May 2021. Results: Overall, 6991 university students were included in the study (3483 in 2020 and 3508 in 2021) with a mean age of 20.8 (standard deviation = 2.5) and 73.4% of women. After logistic regression, binge drinking (occasional and regular), cannabis use (occasional), moderate physical activity (regular), and vigorous physical activity (occasional) decreased in 2020 and 2021 compared to the pre-COVID-19 period. Tobacco smoking (occasional) and vigorous physical activity (regular) decreased only in 2020. Regular tobacco and cannabis use did not change significantly in 2020 and 2021 compared to the pre-COVID-19 period. Discussion: Student health behaviours changed in May 2020 and May 2021 due to the implementation of measures restricting mobility and social interaction. Even if some risky consumption decreased in 2020 after the first lockdown, there was no rebound phenomenon in 2021: consumption either remained lower or similar to the pre-COVID-19 period. These behaviours need to be monitored in the future to assess the long-term effects of these restrictions on student health behaviours.