The growing use of personal fitness trackers, smart watches, connected medical devices, and a myriad of sensor-enabled apps running on smartphones is also generating vast amounts of health data about consumers. For the most part, this data has not been used to any real extent by healthcare providers, clinicians, and researchers to promote the overall health and well being of patients and consumers. This is changing, and we are seeing a revolution in healthcare with the application of mHealth ("mobile health") technologies and practices.