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The strange case of the man immune to Alzheimer’s

8 May 2026

About this episode

Episode 367

Some people are genetically destined to develop Alzheimer’s disease. But one man who carried the devastating mutation seems to have escaped it entirely - and scientists think it may be because of his job. 

Doug Whitney inherited the rare variant of a gene that should have caused early-onset Alzheimer’s in his mid-40s. Many of his family members died from it. Instead, he is now 76 years old with no memory problems and no trace of the disease. Researchers investigating his case uncovered a surprising clue: his inadvertent heat exposure while working as a mechanic in ship engine rooms. 

Could heat exposure really help shield the brain from Alzheimer’s? What does Doug’s case reveal about the disease? And should we all build a sauna in our backyard?

Rowan Hooper is joined by New ÒÁÈ˾þà reporter Alice Klein to discuss Doug Whitney’s extraordinary case and what it could mean for the future of Alzheimer’s research.

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