Chris Hemsworth has opened up about how learning of his heightened genetic risk for Alzheimer’s disease has reshaped the way he approaches health, work, and family.

The 41-year-old Thor actor first discovered the news while filming the Disney+ series Limitless, a documentary project focused on human longevity. Genetic testing revealed Hemsworth carries two copies of the APOE4 gene, one from each paren, placing him at an estimated eight to ten times higher risk of developing Alzheimer’s than someone without both copies.

“It was a warning sign that became a big motivator to look after myself,” Hemsworth told the BBC. “It also felt like an opportunity to raise awareness for something so many people face.”
Alzheimer’s, according to the Cleveland Clinic, is the leading cause of dementia and progressively impacts memory, reasoning, and cognitive function.
The revelation sparked rumours that Hemsworth was retiring or already experiencing dementia, claims he strongly refutes. “It kind of p***ed me off,” he told Vanity Fair. “I’d been vulnerable and shared something personal, and suddenly the story became that I have dementia and I’m quitting acting.”
Instead, the actor says the diagnosis inspired him to make measured, lasting lifestyle changes. Gone is the “smash yourself every session” training mentality. “I used to think if I wasn’t crawling out of the gym, I hadn’t worked hard enough,” he told Body + Soul. “Now I’m more patient, I listen to my body, and I focus on the long game.”

Chris Hemsworth has opened up about how learning of his heightened genetic risk for Alzheimer’s disease has reshaped the way he approaches health, work, and family.

The 41-year-old Thor actor first discovered the news while filming the Disney+ series Limitless, a documentary project focused on human longevity. Genetic testing revealed Hemsworth carries two copies of the APOE4 gene, one from each paren, placing him at an estimated eight to ten times higher risk of developing Alzheimer’s than someone without both copies.

“It was a warning sign that became a big motivator to look after myself,” Hemsworth told the BBC. “It also felt like an opportunity to raise awareness for something so many people face.”

Alzheimer’s, according to the Cleveland Clinic, is the leading cause of dementia and progressively impacts memory, reasoning, and cognitive function.

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The revelation sparked rumours that Hemsworth was retiring or already experiencing dementia, claims he strongly refutes. “It kind of p***ed me off,” he told Vanity Fair. “I’d been vulnerable and shared something personal, and suddenly the story became that I have dementia and I’m quitting acting.”

Instead, the actor says the diagnosis inspired him to make measured, lasting lifestyle changes. Gone is the “smash yourself every session” training mentality. “I used to think if I wasn’t crawling out of the gym, I hadn’t worked hard enough,” he told Body + Soul. “Now I’m more patient, I listen to my body, and I focus on the long game.”

These days, Hemsworth’s routine includes mindfulness practices, solitude, and activities designed to support brain health alongside physical fitness. “Time without outside voices or stimulation is essential,” he said to Men’s Health.

He has also been exploring regenerative medicine, recently meeting Dr. Adeel Khan to learn about MUSE cells, specialised regenerative stem cells found in bone marrow and connective tissue. “The fact Dr. Khan works directly with the scientist who pioneered these cells gave me confidence,” Hemsworth wrote on Instagram.