Changed by Chris Hemsworth

The 39-year-old "Thor" actor discovers that he carries two

copies of the APOE4 gene, one from each of his parents,

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increasing his risk of developing Alzheimer's disease in one episode

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of the short-lived Disney+/National Geographic series,

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which features him exploring ways to extend his life and fight ageing.

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He then added that he "didn't really know what to think" after first

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stating that he "had a number of questions."

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Am I meant to be worried, I wondered. Does this worry you?

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