The relationship between characteristics of irritable bowel syndrome (IBS) and eating disorders (ED) was investigated in a clinical sample of 43 female and 17 male IBS patients who completed the Eating Disorder Inventory (EDI). A diagnosis of IBS was generally unrelated to the Body Dissatisfaction, Perfectionism, and Ineffectiveness subscales of the EDI, but symptom severity was correlated with Perfectionism and Ineffectiveness. Severe bouts of vomiting were significantly associated with desires for lower body weight and reported binge-purge behaviors and cognitions measured by the Bulimia subscale of the EDI. Results suggest the need for a more comprehensive understanding of both types of illness as well as a possible framework for future empirical work.