Chris Hemsworth discovers he may be at risk for Alzheimer's disease in new series, 'Limitless' - Good Morning America

The "Thor" star shares what he fears most about the Alzheimer’s disease and what he's doing to prevent it.
In the new National Geographic show, “Limitless with Chris Hemsworth,” the “Thor” actor discovered he has a risk of developing Alzheimer’s eight to 10 times higher than the general population.

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