University of Iowa Health Care’s rare “brain bank” has contributed to a new study published in Nature that shows that repetitive head impact (RHI)-related brain injuries result in brain cell loss, inflammation, and vascular damage in young, former contact sport athletes. Importantly, many of these detrimental changes were seen in young athletes before the onset of chronic traumatic encephalopathy (CTE), a degenerative brain condition that leads to problems with thinking and emotional regulation.