Psychedelics Improve Depression and Wellbeing Scores in Individuals With Eating Disorders

This study provides the first preliminary quantitative exploration of the psychological effects of psychedelics in individuals with a self-reported diagnosis of an eating disorder.



According to the National Eating Disorders Association, eating disorders (ED) affect approximately 9% of individuals in the United States. Currently, the main treatment for eating disorders is cognitive behavioral therapy. This is usually combined with some pharmacological treatment as well. However, these treatments might only be effective for the comorbid conditions that occur with eating disorders such as anorexia nervosa and bulimia nervosa without necessarily being able to treat the eating disorder itself. Because of this, more treatment routes are needed for those individuals with eating disorders. One study conducted by Spriggs et al. suggests that psychedelics may improve depression and wellbeing, aiding in the recovery for individuals with eating disorders.

Study Design

In 2020, a prospective online study was conducted by Spriggs, Kettner, and Carhart-Harris of the Centre for Psychedelic Research at Imperial College London.1 This study used 28 participants who self-reported a lifetime eating disorder. All of the participants were planning on taking a psychedelic drug of some type. Fifty individuals completed the initial survey, but only 28 completed the surveys after their psychedelic drug experience.

All participants completed the Quick Inventory of Depressive Symptomology (QIDS-SR16), a 16-item measure of depressive symptom severity,2, and the Warwick–Edinburgh Mental Wellbeing Scale (WEMWBS), a 14-item scale designed to measure hedonic and eudemonic aspects of positive wellbeing.3 This evaluation was administered 1-2 weeks before and 2 weeks after the participant’s psychedelic experience. Twenty-seven of the 28 participants also completed the Emotional Breakthrough Inventory (EBI) in relation to their psychedelic experience.4 The EBI is a more recently developed measure of emotional release or breakthrough during psychedelic experiences. Bayesian hypothesis testing was used for the analyses of the measures.

Study Findings

Spriggs et al. found that at baseline, nine of the participants scored in the moderate to the very severe range for depression while the group mean score was in the range of mild depression. Two weeks after their psychedelic experience, there were no participants in the moderate-severe range, and the group mean score had dropped below the threshold for having any depression.

The researchers found that the improvements reported on the QIDS-SR16 measure were highly correlated with changes in the WEMWBS scores. This is an important finding because it has been observed that psychological wellbeing and quality of life are lower in those in remission from an eating disorder than the general population.5 People who recover from eating disorders report positive wellbeing as being central to their recovery. This supports the possible mechanisms through which psychedelic-assisted psychotherapy might be relevant for eating disorders. The researchers also found a weak correlation between EBI and these positive outcomes. Nonetheless, these observations support findings from a prior study on ED and ayahuasca.


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