PremiumDana G. SmithNew York Times·14 Aug, 2026 12:00 AM7 mins to readTwo blood biomarker tests for Alzheimer’s were approved in the United States last year to help diagnose people who are experiencing cognitive impairment. Photo / 123rfThe tests aren’t a guarantee that someone will develop dementia, but that hasn’t stopped people from getting them.In 2018, Beth’s mother died of Alzheimer’s disease at 75. “It was terrible,” she said. And once you’ve gone through that, she added, “you start to become concerned about your own future”.TOP