Mackenzie Dern's already experiencing memory problems and cognitive decline from repeated head trauma

Mackenzie Dern's already experiencing memory problems and cognitive decline from repeated head trauma

Mackenzie Dern, the UFC strawweight champion, has made a candid admission about the toll mixed martial arts has taken on her brain. In a revealing conversation on the Além do Tatame podcast, the 32-year-old Brazilian-American MMA star discussed experiencing noticeable cognitive decline from repeated head trauma sustained throughout her combat sports career. “Now, MMA — it’s not for sensitive people. It’s not for everyone, you know? And it’s a ki…