I am a co-author of a new study, along with lead author Julie Cullen, on the impact of digital technologies on health and wellbeing of children and adolescents. Our study highlights the risk of harm to the health and wellbeing of young people from frequent and extended screen time, with negative impacts from 2 to 6 hours of daily usage. Risks include vision, hearing (when earbuds/headphones are used during screen time), obesity, pain, sleep, cognition, mental health, and emotional/social impacts...