Newsweek:  What happens to our brains as we get older? Well, for the most part, they shrink—but not all of this shrinkage is inevitable.

To find out how to slow, and even reverse, age-associated brain shrinkage, Newsweek spoke to Brad Sutton, a professor of bioengineering at the University of Illinois's Grainger College of Engineering and an expert in the neuroscience of the aging brain.

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