A cut heals. You can cope well without an appendix. But the brain's healing is limited. Each person has a limited number of neurons and Dr. Ann McKee talks about what it means when you lose them to a brain injury.
Learn more about some of the treatments available for those recovering from brain injury and PTSD using our Treatment Hub.
Watch more videos from Dr. Ann McKee.
Ann McKee, MD is the chief neuropathologist for the Framingham Heart Study and the Boston University-based Centenarian Study. She is also the chief neuropathologist for the Boston-based Veterans Administration Medical Centers and for the Sports Legacy Institute.