In this chapter, we overview the current and future impact of pervasive computing in the health domain. In this context, we focus on some of the crucial aspects of data-driven applications. We present examples of recently proposed lifestyle applications and highlight the ethical issues with such applications. We discuss challenges and opportunities in the process of transforming the raw data collected from wearables and mobile devices into insights. Finally, the last part of this chapter provides insights into socio-ethical aspects which are raising in the context of data-driven health applications based on pervasive computing technologies.