Is there really a relationship between a fat tummy and a shriveled brain? Studies at New York University School of Medicine suggest just that! Antonio Convit used MRI technology to compare the brains of 44 obese individuals with those of 19 lean people of similar age and background. He found significant brain changes in the obese individuals. And Eric Stice at Oregon Research Institute found that when you overeat, neural changes occur that increase your risk for future overeating. Earlier studies have linked obesity to an increased risk of type 2 diabetes, which is known to be associated with brain impairment.