Nate Diaz, 38, hits back at claims he is fighting with brain damage as ex-UFC star insists ‘I’m smarter now than ever’ - UFC News #ufc #ufcnews #mma #mma NATE DIAZ has hit back at claims he is fighting with brain damage and insisted: "I’m smarter now than ever". Diaz is a veteran of MMA with 34 bouts but at the age of 38 he is making his professional boxing debut against Jake Paul. And ahead of the August 5 bout, the American denied suffering from chronic traumatic encephalopathy. Diaz said on The Pat McAfee Show: “These f****** are talking about how I talk, and I’ve got f****** CTE or som