Chris Hemsworth discovered he has a “strong” genetic pre-disposition to develop Alzheimer’s disease as he gets older.

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His parents have the APOE4 gene, which is said to prompt risk of the memory-losing sickness. Thus, he's declared a short retirement from acting to invest energy with his family.

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"It really triggered something in me to want to take some time off. And since we finished the show, I’ve been completing the things I was already contracted to do." - Chris said to Vanity Fair

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Indeed, even with this short retirement, Hemsworth carved out opportunity to recognize the chance of returning to be Thor later on. Subsequent to giving the stock "I’m open to it if there’s more" reaction

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