As an eager tester of new therapies to reduce her biological age, or how fast she is aging internally, Barnes-Lentz thrives on collecting more data about her health. It’s especially important for her ...

The Elecsys pTau-181 test can help clinicians rule out Alzheimer's disease by identifying patients unlikely to have amyloid pathology — an abnormal protein buildup in the brain associated with the ...

DNA testing has ruled out a glove found near Nancy Guthrie's Tucson home as a lead in her disappearance, linking it instead ...