Research led by the University of Copenhagen and Herlev-Gentofte University Hospital shows that individuals with the eating disorder anorexia nervosa have an abnormal gut microbiome that likely contributes to symptoms associated with the condition. Published in the April 17, 2023, issue of Nature Microbiology, the study showed multiple differences in the species and amounts of bacteria and viruses present in the gut of people with the condition compared with healthy controls.