When asked to define "Digital Health", Topol responded:
"Digital health—or my preferred term “digital medicine”—refers to the ability to digitize human beings, by a variety of means (sequencing, sensors, imaging, etc.) fully exploiting our digital infrastructure of ever-increasing bandwidth, connectivity, social networking, the Internet of all things, and health information systems."
Topol also described the therapeutic categories that he felt will benefit the most:
"Heart rhythm disorders, diabetes, hypertension are in the first tier.
Asthma, mood and depression, sleep disorders and many more next up."
Certainly the therapeutic categories that he mentions are significant ones from a health perspective, but they may be more challenging as initial targets for development.
What can we learn from a recent runaway success story: the Nike+ Fuelband?
So I predict more 'trivial' but attractive digital applications before we see ones addressing serious diseases. But perhaps that is the distinction between digital health apps and digital medicine apps...