The relationships between Eating Disorders (EDs) and sexuality are complex, and of interest for researchers and clinicians.

To identify psychopathological and clinical factors associated with restoration of regular menses and sexual function in EDs patients.

To evaluate the role of sexuality as a moderator of the recovery process after an individual Cognitive Behavioural Therapy (CBT).

39 Anorexia Nervosa (AN) and 40 Bulimia Nervosa (BN) female patients were evaluated by means of a face-to-face interview, self-reported questionnaires, including Eating Disorder Examination Questionnaire and Female Sexual Function Index, and blood sample for hormonal levels and biomarkers. The assessments were repeated at baseline, at one year follow up, and at three years follow up.

After CBT, both AN and BN patients showed a significant improvement of sexual functioning, which was associated with a reduction of core psychopathology. AN patients who recovered regular menses demonstrated a better improvement across time of psychopathological and clinical features, and were more likely to maintain these improvements at follow up. Recovery of regular menses and improvement of sexuality at the end of CBT were associated with a higher probability to have a full recovery at three years follow up.

These results challenge a concept of recovery in EDs exclusively based on weight restoration or behavioral changes. An assessment including sexual functioning and core psychopathology might identify the residual pathological conditions, and it is able to provide information regarding the long term recovery process.