100m *potential* users of mobile health in USA today

DOTmed.com - Almost one-third of Americans would use mobile phone health apps:

A PricewaterhouseCoopers survey released Wednesday found that one-third of Americans would be willing to use their cell phone to track health information, and about 40 percent said they'd pay for a mobile phone app that let them refill prescriptions, provided access to health records or nagged them to take their meds. A similar number said they would pay a monthly subscription fee for a product that sent critical health information, like blood sugar levels and heart rate, to their doctor.

Seems rather vague terminology - 'track health information' but generally good news for the sector.