Education has long been thought to protect against the ravages of brain diseases like Alzheimer’s. Numerous studies seemed to suggest that the more educated were less likely to develop dementia.
But a large new study finds little difference between people with a high school diploma and those with a Ph.D. when it comes to staving off the damage to brain cells caused by dementing diseases or the rate at which mental decline progresses, once it starts.
“It’s been a longstanding idea that education might be one of those things that allows a person to tolerate these kinds of brain pathologies,” said the study’s lead author, Robert S. Wilson, a professor of neurological and behavioral sciences at the Rush University Medical Center in Chicago. “We found that the more pathology you find in the brain, the faster the cognitive decline was.”