For decades, mainline Protestants have been beset by bad news: declining numbers, aging membership, waning cultural influence.A new study from Duke University Medical Center, however, gives these Protestants one reason for cheer: they seem to have larger brains than born-again Christians, Roman Catholics and the religiously unaffiliated.
The study, which examined the hippocampus region of the brain, found that Protestants who did not have a "born again" experience had significantly more gray matter than either those who reported a life-changing religious experience, Catholics, or unaffiliated older adults.
The study, funded by the National Institutes of Health and the Templeton Foundation, included at least two MRI measurements of the hippocampus region of 268 adults between 1994 and 2005.
It found an association between participants' professed religious affiliation and the physical structure of their brain. Specifically, those identified as Protestant who did not have a religious conversion or born-again experience — more common among their evangelical brethren — had a bigger hippocampus.
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