If the hypothalamus system senses a need for nutrition it will send out hormone signals that make you hungry, if not, it will try to keep you feeling full. However, there are other players in the drive to eat that come from emotional centers and decision-making Genius X centers in the brain. This is what separates us from other animals. Our behaviors aren't as 'hard-wired' so we our more likely to eat inappropriately just because we want to, not because we need to.The STOP signs in our headsA new study published in the September 2007 edition of the American Journal of Clinical Nutrition looked at a specific brain region involved in this whole process, which relates back to the whole concept of brain fitness.Researchers looked at the activity of a brain region called (ready for the long name) the left dorsal lateral prefrontal cortex, or left DLPFC.

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