A closer look

Thor might need to rethink his diet. When actor Chris Hemsworth discovered he carried two copies of the APOE4 gene—a major Alzheimer's risk factor—he inadvertently highlighted nutrigenomics. People with this specific genetic map experience massive neurological inflammation when consuming high amounts of saturated fats, meaning their DNA practically begs them to swap butter for Omega-3-rich salmon to keep their brain tissue intact.