• An estimated 1.5 million head injuries occur every year in the United States.
  
  
• An estimated 1.6 million to 3.8 million sports-related TBIs occur each year.
  
  
• At least 5.3 million Americans, 2% of the U.S. population, currently live with disabilities resulting from TBI.
  
  
• Moderate & severe head injury (respectively) are associated with a 2.3 and 4.5 times increased risk of Alzheimer’s disease.
  
  
• Traumatic Brain Injury (TBI) is the leading cause of death and disability in children and adults from
  ages 1 to 44.
  
  
• Brain injuries are most often caused by motor vehicle crashes, sports injuries, or even simple falls on the playground, at work or in the home.
  
  
• Every year, approximately 52,000 deaths occur from traumatic brain injury.
  
  
• Males are about twice as likely as females to experience a TBI.
  
  
• The leading causes of TBI are falls, motor vehicle crashes, struck by or against events, and assaults, respectively.
  
  
• TBI hospitalization rates have increased from 79% per 100,000 in 2002 to 87.9% per 100,000 in 2003.
  
  Date source: The Brain Trauma Foundation

More TBI facts from the CDC