Early Dementia Signs May Have Two 'Breakpoints' Years Before Diagnosis

A new study, published in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, has found that early symptoms of dementia may appear in two “windows,” years before diagnosis. 

They found that cognitive tests, blood biomarkers, and brain scans changed beginning from people’s late 50s.

Dr Mingzhao Hu, an assistant professor in Mayo Clinic’s Department of Quantitative Health Sciences and first author of the study, said: “By estimating the ages when changes in health markers become more noticeable...