CTE (chronic traumatic encephalopathy), the degenerative brain disease that could dramatically change the way pro football is played in the future (if it’s played at all), can’t be identified in victims until after death. That makes it difficult to prove (or disprove) the connection between pro football, concussions, and death from CTE. But researchers have discovered a possible technique that could diagnose CTE in living patients.
Last year five retired N.F.L. players who were 45 years and older and suffered from mood swings, depression and cognitive problems were given PET, or positron emission tomography, scans. The authors of the study said those scans revealed tau protein deposits in their brains, a signature of C.T.E. While not definitive, the distribution of tau in the retired players was consistent with those found in the autopsies of players who had C.T.E.
If it’s actually possible, this could be huge. Many more players, current and former, can be tested and diagnosed and if CTE was found regularly and consistently, you’d think that insurance companies would flee from the NFL like rats leaving a sinking ship and football would have to adapt (to be more like soccer? flag football?) or die.