December 26th, 2012
'Superagers' have minds of people 20 years younger
In the first study of its kind, researchers at Northwestern University are looking at lifelong best friends Grayce Papp and Evelyn Finegan, both 83 year-olds with memories as sharp as typical 50- to 60-year-olds. Neuroscientists are hoping these "superagers" will give them a better understanding of dementia and Alzheimer's. NBC's Dr. Nancy Snyderman reports.