A study of large-scale functional brain network organization and educational history, led by researchers at the Center for Vital Longevity (CVL), has identified a new biomarker of Alzheimer’s disease. The findings, published online this week in Nature Aging, describe how declines in a measure of brain network organization precede cognitive impairment in older adults. Researchers also found that brain network declines are greater among individuals without a college education, suggesting that there are aspects of an individual’s environment that may accelerate brain aging.