Mayo study: Alzheimer's symptoms found in mid-50s - Phoenix Business Journal:

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That’s much earlier than previously thought, suggesting that treatment would be more effective if startedin middle-agex people, before onset of the according to researchers in the . The study followed 815 healthyt people ages 21 to 97 with and withoutf the APOEe4 gene, a key risk facto r for Alzheimer’s, for up to 14 Memory and thinking tests were used to compare cognitive About one out in four peoplew have at least one copy of the while 2 percent have two copies, inherited from both parents and increasing risk. Alzheimer’s disease affectsd about 10 percent of people over age 65 and almost halfover 85.
Researcherss from several institutions in theArizonq Alzheimer’s Consortium collaborated on the study, includint Arizona State University, Banner Alzheimer’ss Institute, Barrow Neurological Institute, Sun Healty Research Institute, Translational Genomics Research Institute and University of Arizona. The Nationa l Institute on Aging and the state of Arizonaprovided “This study highlights the idea that Alzheimer’x disease is a progressive disorder that likelg begins well before clinical diagnosis,” said Creightonm Phelps, director of the Alzheimer’s Disease Researchh Center program for the Nationalo Institute on Aging.
“Additional research is needede to identify those at high genetic risk and develoop methods to delaydisease progression.” Researchers, do not recommend using brain imaging or cognitive tests to predicyt risk.