A 2017 study shocked the football world with a headline: CTE had been found in 110 out of 111 brains of deceased former NFL players. It was alarming, but also sparked a backlash of naysayers pointing out that it was a biased study with little scientific value.
But Drs. Zach Binney and Kathleen Bachynski thought otherwise and came up with a study of their own -- using math to figure out a ballpark range for what the prevalence of CTE might be. They speak with us in this bonus episode, teaching us, among other things:
-- Based on their own studies, the bare minimum of CTE in recently deceased NFL players is about 10 percent.
-- Even if players with CTE are 461 times more likely to donate their brains, the overall rate would still be 20 percent.
-- NFL players as a whole are healthier and live longer than non-NFL players, but they die of brain diseases at a much higher rate.