COVID-19 has disrupted the lives of everyone, including children and young people, beyond recognition. So much so, that the proportion of children aged six to 16 with probable mental health disorders has increased from one in nine in 2017 to one in six in both 2020 and 2021. In this episode, we talked with Professor of Child and Adolescent Psychiatry, Tamsin Ford, Professor of Health Neuroscience Paul Fletcher and behavioural epidemiologist Dr Esther van Sluijs about growing concern over the recent and widespread deterioration of adolescent mental health and what can be done about it. We cover everything from the prevalence of mental health problems and eating disorders, sedentary behaviour and mentally passive activities, to how mental illness is represented in video games and how video games can be used to engage the public with mental illness in the right way. Along the way, we hear about mental health before and during the Covid-19 pandemic. This episode was produced by Nick Saffell, James Dolan, Naomi Clements-Brod and Annie Thwaite.