From refusal to acceptance: 10-week therapy empowers parents to solve severe selective eating in children with autism

Picky eating is a challenge most parents are familiar with, but for parents of autistic children, severe selective eating can lead to nutritional deficiency and place tremendous stress on the family. However, a new study from Constructor University PhD candidate Sofya Bajaa has demonstrated a transformative new approach to treating severe selective eating in children with Autism Spectrum Disorder (ASD). Bajaa’s newly developed Schmetterling Nutritional Behavior Intervention (NBI) program achieved dramatic improvements in dietary variety and nutritional intake in the course of just 10 weeks.

Establishing consistent and nutritious eating habits is a significant hurdle faced by many families living with autistic children. Food refusal and limited dietary intake can often lead to nutritional deficiencies during crucial stages in a child’s development and contribute to elevated stress levels and conflict in the home. However, the new study from Bajaa offers a promising boon to parents and caregivers grappling with severe selective eating. The study highlights the efficacy of the Schmetterling NBI Program, a creative and flexible therapeutic intervention trialed across three families of children with ASD exhibiting severe selective eating. The children selected to participate in the study, aged two to six, were initially subsisting on a restricted diet of processed foods like chips and sweets, while systematically refusing fruits and vegetables.

The 10-week program consisted of 28 therapeutic sessions, which actively included and utilized the child’s parents as "co-therapists." By training parents alongside the professional therapists, the intervention ensured that families could seamlessly adapt and integrate the behavioral techniques—such as positive reinforcement and gradual food exposure—from the clinic to the home. The intervention also incorporated innovative sensory and physical engagement strategies, including exercise prior to meals and "modeling" videos featuring baby animals eating, to lower the children's resistance to new textures and flavors.

"By empowering parents to act as co-therapists, we create a more accessible and sustainable path for families," said Bajaa. "This research proves that with the right neurophysiological and behavioral framework, we can significantly improve the quality of life for children with autism."

The results recorded in the study showed remarkable and significant quantitative shifts in eating behavior:

• Surge in food acceptance: Children’s willingness to try new foods rose from a baseline of 8–15% to an astonishing 76–91%.
• Reduction in fussiness: Food-related behavioral issues decreased by 41–67%.
• Sustained growth: All three participants showed healthy weight gain and maintained progress after the program concluded.
• Reduced symptom severity: Notably, overall autism symptom severity scores improved throughout the intervention.

Neurophysiological assessments were another key component of the research, which was supported by Prof. Ahmed A. Karim, Prof. Dr. Thomas Lang, Prof. Dr. Ben Godde, Prof. Dr. Martin Hautzinger and Dr. Basel Allozy. By investigating brain-related responses during food tasks, the research team was able to gain a deeper understanding of the underlying mechanisms that drive selective eating in children with ASD.

These neuropsychological insights served as the foundation for the broader Schmetterling Program design, leveraging several therapeutic approaches—including hydrotherapy, equine therapy and psychodrama—in a sequential system. Each layer of the program built upon the last to support the child’s development in a holistic and structured environment.

Originally conceptualized by Bajaa during her Master’s research, the Schmetterling Program has undergone rigorous empirical validation and scientific refinement at Constructor University. The results of the study suggest the program could offer a promising new standard for pediatric ASD intervention.