“Aging is not a mild form of dementia,” says cellular neurobiologist John Morrison, who specializes in aging. Until recently, many scientists thought brain cells died as we aged, shrinking our brains and shedding bits of information that were gone forever. Newer findings indicate that cells in disease-free brains stay put; it’s the connections between them that break. With this new perspective has come an explosion of research into how we can keep those connections, and our brain function, intact for longer.
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