Posted: Jul 10, 2012 8:57 AM by NBC News
Scientists say people who are more reward-sensitive have a greater urge to eat when they watch junk food commercials.
A new Australian study had participants rate the pleasantness of food images embedded into a short movie as well as their desire to indulge in each kind of food.
Reward sensitive people responded most positively to junk food images but not images of healthy foods.
The Australian study's findings may explain why some people aren't obese even if they have easy access to cheap junk food.
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