Jon Snow, 78, admits 'I thought I was dead' as he talks about his devastating Alzheimer's diagnosis: 'The creaking of what was left of the brain was outspinning the sound of my voice'

Jon Snow, 78, discusses his Alzheimer's diagnosis and admits he initially believed he was dead. He describes the cognitive challenges as 'the creaking of what was left of the brain was outspinning the sound of my voice.'