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1 .This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .A book a day may keep dementia away.
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3 .Even if you read it as a kid.
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4 .Because a study finds that exercising the brain, at any age, may preserve memory.
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5 .The work appears online in the journal Neurology.
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6 .Previous studies have shown that engaging in brain-building activities is associated with a delay in late-life cognitive decline.
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7 .But why?
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8 .Does flexing the old gray matter somehow buffer against age-related intellectual impairment?
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9 .Or is cognitive loss simply a consequence of the aging brain's physical decline?
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10 .To find out, researchers questioned nearly 300 elderly individuals about their lifelong participation in intellectual pursuits,
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11 .like reading books, writing letters and looking things up in the library.
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12 .Then, every year, for an average of six years until they died, the subjects took tests to measure their memory and thinking.
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13 .What the researchers found is that folks who worked their mental muscles, both early and late in life, remained more intellectually limber than those who didn't,
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14 .even when a post-mortem look at their brains revealed the telltale signs of physical decline.
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15 .So if you're headed to the beach, don't forget a hat and a book, both to protect your head.
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16 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.
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