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1 .This is Scientific American's 60-Second Mind, I'm Erika Beras. Got a minute?
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2 .We know junk food can change the way bodies are shaped.
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3 .Now, a study finds that those irresistible sweet and salty concoctions may also change the way brains are wired, at least in rats.
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4 .Researchers divided rats into two groups,one labeled Cafeteria, the other called Chow.
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5 .Both groups got a typical rat food diet, but the Cafeteria rats also got a bonus: meat pies, cakes and cookies.
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6 .Both rat groups gained weight.
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7 .But the Cafeteria rats gained significantly more than the Chows did, nearly half a pound more, which is a big body burden for a rat.
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8 .But more important, over two weeks time the Cafeteria rats seemed to care less and less about even seeking out a balanced diet.
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9 .This new behavior endured even after the rats were returned to their more healthy fare.
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10 .The study is in the journal Frontiers in Psychology.
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11 .The researchers think junk-food diets cause lasting changes in the rewards circuits part of the brain, which plays a big role in decision-making.
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12 .So if you're a regular cookie eater and the next time you mindlessly reach for a cookie you wonder why you can't help yourself,
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13 .well, it could be because you're not in charge, your rewired brain is.
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14 .Thanks for the minute, for Scientific American's 60-Second Mind. I'm Erika Beras.
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