Considering that we now know that repeated subconcussive hits over time can result in CTE later in life, and that even amateur boxers during sparring will suffer many of those, my priors are strongly in the other direction. It’s going to take many more studies coming to the same conclusion to convince me otherwise.

Part of my priors is my exposure to amateur MMA, and training and sparring with people who fought amateur MMA. You take a lot of hits in sparring, and some of them are hard enough to disorient you, even thought it’s not a concussion.