A medical study published in PLOS One, Consequences of Repeated Blood-Brain Barrier Disruption In Football Players, indicates that football players who suffer non-concussion football head blows suffer from long-term brain damage. In other words, football players who don't suffer a concussion but merely take hard hits on the head show long-term effects of brain damage. Reporting on the study is Bloomberg News, the Cleveland Plain-Dealer, HealthDay and MedPage Today.