A brain disorder called chronic traumatic encephalopathy (CTE) is connected to repetitive head trauma and concussions. The only way to diagnose the illness, which progressively worsens over time and causes dementia, is through a post-mortem investigation.
In 2007, there were only 45 confirmed cases of CTE worldwide; however, over 10,000 participants have since participated in research.
Raphael Varane, a defender for Manchester United, made similar calls earlier this week for increased awareness and protection about concussions.
Rousey feared that the UFC and eventually the WWE would forbid her from competing for her, so she kept the seriousness of the injuries to herself and decided to talk about them now.