Digital health technologies are revolutionizing healthcare by changing how health knowledge is created, accessed, and used. Wearable devices and mobile apps now provide means to measure and monitor people's health behaviors and bodies. While the first generation to experience digital healthcare, young people are not necessarily digitally native and face risks from social media use and being subjects of digital surveillance. Some critical issues that arise are the need for digital health literacy to interpret data, potential digital health inequalities, and how collected health data may shape future healthcare opportunities and be used.