In the analysis of gut microbiota from stool samples collected from children with autism, compared to a healthy control group, the following findings were observed;

1. The gut microbiome profiles of children with autism are different from those of healthy children.

2. The microbiome profiles of children with autism are similar to each other.

3. The microbiome profiles of healthy control group children are also different from those of children with autism.

4. The microbiome profiles of the healthy control group children resemble each other within the group.

Transferring a suspension of microbiome-associated bacteria from the feces of children with autism to healthy mice has been shown to cause the behavioral abnormalities associated with autism in postnatal mice.

This finding was not observed with the transfer of microbiome-associated bacteria obtained from healthy children.

The microbiota-gut-brain axis has been shown to play an important role in triggering pathological changes that may occur in the brain, as demonstrated by numerous scientific studies.