Recent research has revealed that children diagnosed with anorexia nervosa exhibit significant brain changes that cannot solely be attributed to malnutrition. This study, conducted by Clara Moreau and her team at the University of Montreal, utilized brain scans to investigate the cortical thickness of children with anorexia in comparison to those with another restrictive eating disorder known as avoidant/restrictive food intake disorder (ARFID) and a control group without eating disorders.
The analysis included 124 children with anorexia, 50 with ARFID, and 116 without any eating disorders, all under the age of 13 and residing in France. Findings indicated that children with anorexia had notably thinner cortices in 32 regions of the brain, particularly in the superior parietal lobule, which is critical for sensory processing. This pattern of cortical thinning mirrors changes observed in older adolescents and adults with anorexia, suggesting potential accelerated brain aging in affected children.
In contrast, children with ARFID did not display significant differences in cortical thickness when compared to those without eating disorders. This lack of similarity raises questions about the neurological underpinnings of ARFID, which typically develops earlier in life and might allow the brain to adapt to low food intake.
Moreover, the study identified correlations between anorexia and obsessive-compulsive disorder (OCD), while ARFID showed parallels with autism, particularly in sensory sensitivities. However, the overlap with other mental health conditions complicates the interpretation of these findings.
Overall, the research underscores that while malnutrition plays a role, it is not the sole factor influencing the neurological changes in children with anorexia, highlighting the need for further understanding to improve treatment options.