Junk food makes rats lose appetite for balanced diet
A diet of junk food not only makes rats fat, but also reduces their appetite for novel foods, a preference that normally drives them to seek a balanced diet, reports a study. "The interesting thing about this finding is that if the same thing happens in humans, eating junk food may change our responses to signals associated with food rewards," says an author. "It's like you've just had ice cream for lunch, yet you still go and eat more when you hear the ice cream van come by."
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