In this interview we talk with Dr. Benny Lo, Lecturer at the Hamlyn Centre, Imperial College London, about the current research in the field of Body Sensor Networks. The focus is on using small sensors, often in the form of pervasive wearable devices, for continuous monitoring of patients. The research is concerned with the entire end-to-end system from sensor hardware, operating system, analytics all the way to the actual clinical trials. At the second half of the interview we discuss a few of the big trends in healthcare innovation as these are shaped by some of the major and, to some extent, diverse commercial and non-commercial driving forces. Interviewed by George Voulgaris for Tech Talks central.