Nearly 5.5 million Americans have Alzheimer's disease, with an equal amount suffering mild, or early stages of this malady. The latest update in 30 years defines patients as being 65 and older, but evidence suggests that signs of this disease, which robs memory may start in the brain five to ten years before it is detected.
Researchers at the Johns Hopkins Alzheimer's Disease Research Center say that several biomarkers have been identified, but they are not ready for clinical usage as of yet pointing to a lack of standardization about how the tests are performed.
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