Violent blows or jolts to the head can cause traumatic brain injury (TBI), and there are currently about five million people in the U.S. living with chronic neurodegeneration and related impairments due to TBI. In addition to cognitive and mental health impairment, chronic neurodegeneration may also contribute to why TBI increases the risk of age-related neurodegenerative diseases, such as Alzheimer’s or Parkinson’s disease. It could also play a role in chronic traumatic encephalopathy (CTE).