Brain glucose levels can predict someone waking from a coma
 

Watching a loved one exist in a vegetative state can be absolutely heartbreaking, but there isn't a lot that can be done aside from waiting to see if they'll come out of it. A big problem is that doctors have a hard time discerning between patients i...

http://www.engadget.com/2016/05/27/b...g-from-a-coma/