A blood pressure cuff from Withings works with an iPhone or iPad to track blood pressure (credit: Withings)

The smartphone will be a sensor that will help people take better control of their health by tracking it with increasing precision, says Dr. Eric Topol in a new book, The Creative Destruction of Medicine.

The are running common medical tests, skipping office visits and sharing their data with people other than their physicians,

Devices to measure blood pressure, monitor blood sugar, hear heartbeats, and chart heart activity are already in the hands of patients. More are coming.

[ New York Times ]