Behavioral Phenotype of ASD Preschoolers with Gastrointestinal Symptoms or Food Selectivity.

The team looked at the preschoolers with autism. They asked parents about tummy pain, constipation, and picky eating. They also tracked sleep, self-injury, and anxiety.

Kids were 3 to 5 years old. No IQ test or autism score was needed to join.

Four out of ten kids had big GI or food problems. These kids woke more at night, hit or bit themselves more, and showed more worry.

IQ and autism severity stayed the same whether GI issues were present or not.

Laugeson et al. (2014) watched the same kids over the study period. Food pickiness did not fade. They say sensory over-responsivity is the main driver.

Liu et al. (2025) adds a new layer. They link food seeking and food refusal to poor executive skills. The 2017 paper did not test this skill.

Peters et al. (2014) found mixed bowel issues tied to rigid routines. Prosperi et al. (2017) did not split GI types, so the two studies may be looking at partly different groups.

Pubylski-Yanofchick et al. (2022) later showed that positive reinforcement can grow food choices even in adults. This gives hope that the preschoolers in the 2017 study can still improve.

When a preschooler with autism has GI pain or eats only three foods, look past the menu. Screen for sleep trouble, self-inj injury, and anxiety. Treating the whole cluster may ease feeding battles faster than focusing on food alone.