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Anorexia nervosa and bulimia nervosa, two eating disorders, may be caused by altered function of neural circuitry. Both eating disorders are known to be deadly and are characterized by extreme behavior of restricting food intake, or binging and purging.
Research lead Walter H. Kaye said, “It has been unknown whether individuals with anorexia or bulimia have a disturbance in the system that regulates appetite in the brain, or whether eating behavior is driven by other phenomena, such as an obsessional preoccupation with body image. However, this study confirms earlier studies by our group and others that establish a clear link between these disorders and neural processes in the insula, an area of the brain where taste is sensed and integrated with reward to help determine whether an individual hungry or full.”