Elimination Diets, Not Food Selectivity, Are Associated with Reduced Nutritional Status in Children with Autism...

Area of Science:

• Pediatrics
• Nutritional Science
• Neurodevelopmental Disorders

Background:

• Autism spectrum disorder (ASD) involves social communication deficits and sensory issues like food selectivity.
• Dietary interventions are explored for ASD due to limited causal therapies.
• Nutritional status in children with ASD requires further investigation.

Purpose of the Study:

• To evaluate the impact of dietary factors on the nutritional status of children with ASD.
• To analyze associations between nutritional status and dietary patterns, including elimination diets.
• To assess the prevalence of short stature and vitamin D deficiency in children with ASD.

Main Methods:

• 103 children (75 with ASD, 28 controls) were assessed.
• Nutritional status determined by biochemical markers and anthropometry.
• Dietary factors, including elimination diets, were analyzed for associations with nutritional outcomes.

Main Results:

• ASD diagnosis correlated with lower height Standard Deviation Scores (SDS).
• Food selectivity was linked to a higher prevalence of short stature in ASD.
• Elimination diets were associated with lower BMI SDS, but often lacked medical justification.
• Vitamin D deficiency was significantly more prevalent in the ASD group (84.6%) compared to controls (33.3%).

Conclusions:

• Elimination diets were the sole dietary factor linked to reduced BMI SDS in children with ASD.
• Food selectivity alone did not impair nutritional status.
• Many elimination diets were used without confirmed medical indications.
• Evidence-based dietary management and vitamin D supplementation are crucial for children with ASD.