Eating disorders include anorexia, bulimia, binge eating, and dysfunctional eating patterns. Many psychologists and other mental health professionals consider eating disorders to be food addictions, meaning food is being used in an addictive way (similar to drug or alcohol addiction). Certain substance abuse treatment programs will have treatment for eating disorders as one of the services offered. An eating disorder may also present as a co-occuring disorder or dual diagnosis alongside drug and alcohol addiction.