The increasing mental health challenges among children and young people, including rising rates of anxiety, depression, loneliness, and stress-related difficulties, are a global concern. One contributing factor is the shift toward digital-centered childhoods, which may disrupt developmental processes and interfere with health-promoting behaviors. This poster applies a robust health psychology framework to explore how digital overexposure affects the mental health, brain development, and coping processes of children and young people. It also identifies effective strategies for prevention and intervention. Evidence from research on stress regulation, coping, and health behavior change demonstrates that excessive screen use is linked to disrupted sleep, reduced physical activity, social isolation, and diminished connectedness—mechanisms that increase vulnerability to anxiety, depression, and loneliness. Neuroscientific findings further suggest that constant digital stimulation can alter brain development by affecting reward pathways, attention regulation, and stress-response systems, making it more difficult for children and young people to manage emotions and sustain focus. Digital overexposure also undermines adaptive coping by heightening social comparison and reducing opportunities for unstructured play, both of which are protective during critical developmental stages. At the same time, health psychology emphasizes the importance of buffering factors, such as strong peer support, family connectedness, and community engagement, which can help mitigate loneliness and foster resilience. Effective interventions, therefore, require a multi-level approach: promoting individual coping skills, supporting families in regulating digital use, and advancing school and policy initiatives that safeguard developmental health. This perspective aligns with the International Association of Applied Psychology's mission to advance psychological science and practice globally, emphasizing the importance of collaborative, evidence-based strategies to protect the well-being of children and young people in the digital age.