"It's a mild case of what people have as Alzheimer's. It's similar to that,” the 79-year-old Turner tells Ted Koppel on CBS Sunday Morning. “But not nearly as bad. Alzheimer's is fatal. Thank goodness I don't have that. But, I also have got, let's – the one that's – I can't remember the name of it." Turner says the dementia has left him "tired," "exhausted" and sometimes forgetful. ALSO: Turner criticized CNN for being too heavy on politics.