Kosar has spoken publicly about a progressive decline in cognitive function, a trajectory that drew stark warnings years ago. He has described a period when he struggled to enunciate and articulate multi-syllable words, a symptom he says doctors warned could worsen over time. This concern is set against a broader history of repeated concussions, seizures, and extensive medical interventions. In an interview, Kosar disclosed that he had experienced numerous seizures—15 in total—with at least two episodes resulting in comas lasting 72 and 96 hours. He has also referenced more than 40 surgeries and numerous broken bones across his lifetime.
In addition to neurological concerns, Kosar later revealed liver disease in his medical narrative. Cirrhosis and Parkinson’s disease joined the list of health issues he has faced, with the former eventually leading to his placement on the transplant waiting list. Around the same period, he described a frightening incident following a December 2023 game, during which his body collapsed and he needed a substantial blood transfusion due to severely low hemoglobin.
After more than a year on the transplant list, Kosar underwent a liver transplant in November 2025 at a major medical center in Cleveland. The procedure followed complications, including internal bleeding and several prior attempts that were postponed due to infection in a donor organ. Since the operation, Kosar has reported feeling strong and optimistic about his recovery.
The brain-related aspects of his health journey continue to be a major focus. Kosar has discussed traumatic brain injuries, potential neurodegenerative changes, and Parkinsonian symptoms in the years since his playing days. In his most recent reflections, he has emphasized potential treatments and therapies that have helped him function more effectively. He has spoken about regenerative medicine concepts and therapies aimed at modulating brain inflammation, suggesting they have contributed to cognitive improvements he has experienced personally.
What stands out in Kosar’s story is the consistency of his narrative about gradual improvement rather than a sudden turnaround. He has discussed ongoing efforts and protocols—ranging from a holistic approach to nutrition and lifestyle choices to high-dose vitamins and other therapies—that he believes have contributed to his better-than-expected functioning. He has underscored that his experience motivates him to share what he’s learned, with the aim of helping others recognize symptoms early and adopt strategies that may mitigate long-term impact.
Kosar’s NFL career remains a significant chapter in professional football history. Drafted in the 1985 supplemental draft, he spent nine seasons with the Browns, guiding the team to three AFC Championship Games. He later won a Super Bowl with the Dallas Cowboys in 1993 before concluding his NFL tenure with the Miami Dolphins in 1996.
The current emphasis of Kosar’s public remarks centers on responsibility and awareness. He has expressed that his health journey is not only about his own survival but about illustrating potential pathways for others who may face similar challenges. By sharing his experiences, he aims to encourage proactive health monitoring, timely medical consultations, and adherence to treatment plans that could improve outcomes for those dealing with neurodegenerative symptoms, liver disease, and other serious conditions.
In summary, Bernie Kosar’s post-NFL life is marked by a battle against complex health issues, a liver transplant, and ongoing neurological concerns. His openness about his experiences serves as a reminder of the long-term health risks athletes may face and the importance of medical follow-through, early intervention, and supportive therapies in managing life after professional sports.
