This is just so sad. Jack is such a great guy, I absolutely hate that it's reached this point for him.
His disease has progressed to the point he longer recognizes most family members, they shared.
It was announced in 2021 that Hanna was retiring from public life.
“Doctors have diagnosed our dad, Jack Hanna, with dementia, now believed to be Alzheimer’s disease,” Hanna’s family wrote in a statement posted to his verified Twitter account at the time.
