In the United States, an estimated 1.6–2.8 million people sustain a traumatic brain injury (TBI) each year. Globally, the estimated number of TBIs is between 27 and 70 million annually.
A concussion is a form of Traumatic Brain Injury. Of the 2.8M cases about 80% are diagnosed as concussions (or mild TBI’s).
Between 1.7 and 3.8 million sports and recreation-related concussions happen each year.
About 300,000 (20%) of those are from football. The rest are basketball (10%), cycling (7%), hockey, lacrosse, skiing, soccer(10%) and snowboarding. 5-10 concussions go unreported or undetected.
Last year, a study found that a history of playing football was associated with 61% higher chance of having Parkinson’s symptoms or being diagnosed with the disease. A 2018 study similarly found that repetitive head impacts from years of playing contact sports were associated with precursors to Parkinson’s disease.