UnitedHealth Group (NYSE:UNH) and Comcast (NASDAQ:CMCSA) are turning to tech -- and reality TV -- in the war on diabetes. It's a vitally important battle: UnitedHealth estimates that half the U.S. could have diabetes or prediabetes by 2020, at a cost of $3.35 trillion.

And so the health-care and cable giants teamed up in 2010 to create a reality TV show called Project NOT ME: Take Charge, which has since won a Mid-Atlantic Emmy Award. The show teaches participants to recognize cues that influence behavior and to make positive changes.

Our roving reporter Rex Moore interviewed UnitedHealth Group's Dr. Deneen Vojta at the recent CES Unveiled event in New York City. In this video, Vojta explains how UnitedHealth leverages technology to allow patients to battle diabetes from their home.

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