"Chris Hemsworth's Health Concerns Lead to Fewer Acting Roles"

Actor Chris Hemsworth discovered he has two copies of the APOE4 gene, which is linked to an increased risk of Alzheimer's disease. Alzheimer's affects around 850,000 people in the UK and 5.8 million in the US, but charities fear rates will soar across the world in the coming decades as populations age. Genetic testing kits for the APOE gene are available from companies such as 23andMe, but experts are divided on whether testing for the gene is helpful for most people. Other potential ways of spotting Alzheimer's include hearing tests, eye examinations, blood tests, and behavioral change risk factors.