mark segal, professor of medicine at the lapgo medical center.de. >> chairman and professor of urologist at the hospital chief of robotics surgery. >> did you just wake up? there is a shocking newt

mark segal, professor of medicine at the lapgo medical center. unlocking the secret code. >> chairman and professor of urologist at the hospital chief of robotics surgery. >> did you just wake up? there is a shocking new study on sleep loss. how serious is this? you lot of one job, two jobs and not getting enough sleep. >> the centers for disease control said one third of all americans have six or less hours of sleep a night. that is not enough. no matter how much we tell them go to bed and wake up at the same time and don't have alcoholic beverages. they said we will make up for it and take a little nap. now a study starts to worry us. this study show that is the brain produces a protein that protects brain cells when you haven't slept. you get protection, but it doesn't last long. the cells start to die. the lead orphan in the study, she said it's a safe guard protein when cells increase energy. they mop up free radicals. a great protein. we talked about it here. you want to get rid of it and it wears off. 25% of the brain cells died in these m