Dysbiosis in Gut Microbiota in Children Born Preterm Who Developed Autism Spectrum Disorder: A Pilot Study.

Fujishiro et al. (2023) looked at poop samples from preterm kids with and without autism.

They used gene sequencing to map which gut bacteria lived in each group.

The goal was to see if tiny preemies who later developed ASD carried a unique bacterial fingerprint.

Kids born early who later had ASD hosted more kinds of gut bacteria than their typical peers.

Their bacterial mix held extra Firmicutes and formed different cluster patterns.

In short, preterm ASD guts looked measurably different on the inside.

Zou et al. (2020) and Xie et al. (2022) saw the same gut upset in Chinese children who were not necessarily preterm, so the bug shift appears across birth histories.

Baker et al. (2025) pooled 20 studies and agreed gut markers look promising but warned they are still too young for clinic use; our pilot fits that caution.

Cai et al. (2025) went one step further, showing gut profiles can tell apart kids with ASD from kids with ADHD, hinting that different neuro-types may carry their own microbe signatures.

If you work with preterm toddlers, think of the gut as a quiet data source. Track GI symptoms, diet shifts, and antibiotic use while the science firms up. One day a simple stool screen might flag ASD risk long before formal testing, letting you start early ABA or parent coaching sooner. For now, keep the finding in your back pocket and watch for replication with larger preemie groups.