Health4Life is the first eHealth program to concurrently target the ‘Big 6’ health behaviours to prevent chronic disease risk among adolescents, including physical activity, healthy eating, limiting sedentary recreational screen time, getting the right amount of sleep, and avoiding alcohol use and smoking. The program consists of three components:

• Online school-based program (6×20 minute cartoon-based modules and additional class activities);
• Companion smartphone app;
• Additional app content for youth most at risk of chronic disease, delivered 12- and 24-months after the initial intervention.

The following health promotion is a continuation of the study.