[needle]

I know I have had at least three concussions in my life just from falls and spills, including taking a knee to my head playing volleyball that landed me in the ER.  Played football a couple years in high school, and may have suffered some head trauma, but I was never diagnosed with or feel I had a concussion.  When you have one, you know it.

As I understand it, it's very unclear whether sub-concussive impacts (so, hits to the head *not* resulting in a concussion) result in CTE. So, one question I have about these studies is if the specimens were from people who say they had concussions or people who say they played but did not have any concussions.

[needle]

I know I have had at least three concussions in my life just from falls and spills, including taking a knee to my head playing volleyball that landed me in the ER.  Played football a couple years in high school, and may have suffered some head trauma, but I was never diagnosed with or feel I had a concussion.  When you have one, you know it.

As I understand it, it's very unclear whether sub-concussive impacts (so, hits to the head *not* resulting in a concussion) result in CTE. So, one question I have about these studies is if the specimens were from people who say they had concussions or people who say they played but did not have any concussions.