Inside Alzheimer's Greg O'Brien, who was diagnosed with early-onset Alzheimer's disease five years ago, shares his experience living with the illness.
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Inside Alzheimer's

What's it like to live with early-onset Alzheimer's disease? Greg O'Brien offers a glimpse.

Greg and Mary Catherine O'Brien with their kids, at daughter Colleen's marriage to Matt Everett last August. Greg has early-onset Alzheimer's. From left, Brendan O'Brien, Greg O'Brien, Colleen O'Brien, Matt Everett, Mary Catherine O'Brien, and Conor O'Brien. Courtesy of Greg O'Brien hide caption

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Courtesy of Greg O'Brien

Supporting A Spouse With Alzheimer's: 'I Don't Get Angry Anymore'

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Greg O'Brien gathers his thoughts before a run in 2013. "Running is essential," he says. Michael Strong/Living With Alzheimers hide caption

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Michael Strong/Living With Alzheimers

One Man's Race To Outrun Alzheimer's

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Greg O'Brien (left), with Colleen, Mary Catherine, Conor, and Brendan O'Brien, has been grappling with Alzheimer's disease for the last five years. Courtesy Greg O'Brien hide caption

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Courtesy Greg O'Brien

After Alzheimer's Diagnosis, 'The Stripping Away Of My Identity'

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When he was 59 years old, Greg O'Brien was diagnosed with early-onset Alzheimer's disease. Five years later, he is speaking publicly about his experience, even as his symptoms worsen. Courtesy of Greg O'Brien hide caption

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Courtesy of Greg O'Brien

'How Do You Tell Your Kids That You've Got Alzheimer's?'

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