Research Identifies Blood Biomarker For Predicting Dementia Before Symptoms Develop

The researchers measured blood levels of P-tau181, a marker of neurodegeneration, in 52 cognitively healthy adults, from the U.S.-based Framingham Heart Study, who later went on to have specialized brain PET scans. The blood samples were taken from people who had no cognitive symptoms and who had normal cognitive testing at the time of blood testing.