Recent Blog Articles

Mind & Mood

New Alzheimer's guidelines define early stages of the disease

July 01, 2011

Changes in the brain are detectable years before devastating memory loss.

In April 2011, the National Institute on Aging and the Alzheimer's Association released revised guidelines for the diagnosis of Alzheimer's disease (AD), including criteria for spotting the disease before it develops into full-blown dementia. The guidelines also address the experimental use of biomarkers that may help diagnose AD earlier. (A biomarker is a measurable substance or condition in the body that can indicate the presence or absence of a disease.) The revised guidelines and criteria appeared online April 19, 2011, in the journal Alzheimer's & Dementia (

To continue reading this article, you must log in.

Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.

  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »

I'd like to receive access to Harvard Health Online for only $4.99 a month.

Sign Me Up

Already a member? Login ».


As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles. No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.