There is a growing interest in the relationship between Autism Spectrum Disorders (ASD) and Eating Disorders (ED), two relatively common conditions lying on a spectrum from mild to severe clinical features. However, only limited data are available about pathological eating behaviours throughout adults on the autistic spectrum.

The aim of the present study is to assess dysfunctional eating behaviours, including ED manifestations and ASD-related eating disturbances, in a population of adults with ASD with no intellectual disabilities.

We recruited 115 adults on the autistic spectrum, with no intellectual disability and 114 neurotypical adults (NA). Participants completed the “Eating Attitude Test” (EAT-26), to measure symptoms and concerns characteristic of ED, and the “Swedish Eating Assessment for Autism Spectrum Disorders” (SWEAA), to assess eating behaviours frequently seen within the autistic spectrum.

Subjects with ASD scored significantly higher than NA at the EAT-26 and at the SWEAA. Women reported higher scores than men. Moreover, an interaction effect Group*Gender emerged at the EAT-26 only, with women with ASD scoring higher than men with and than NA overall. ASD subjects scored higher than NA at the EAT-26 subscales Dieting and Bulimia. Furthermore, the higher the SWEAA total score was, the more likely it was that a subject on the autistic spectrum would score above the cut-off of 20 at the EAT-26.

These results indicate that adults with ASD without intellectual disability presented not only a higher prevalence of eating disturbances typical of autistic spectrum, but also other ED symptoms in comparison to NA.

No significant relationships.