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Gut bacteria patterns in autism and ADHD: A systematic review
Updated
Abstract
Twenty-four articles were identified, including 20 studies on autism spectrum disorder (ASD) and 4 on attention-deficit hyperactivity disorder (ADHD).
- For ASD, several studies indicated a difference in gut microbiota diversity, although no consistent specific bacterial changes were reported across all studies.
- Common functional characteristics of gut microbiota were identified in individuals with ASD when compared to controls.
- The results for ADHD were more varied, with no definitive differences in gut microbiota composition observed.
- The association between gut microbiota and ADHD remains unclear due to the heterogeneous results across studies.
- Methodological differences among studies hindered the ability to compare findings effectively for both ASD and ADHD.
Simplified
Key numbers
20
Total Studies on ASD
Studies investigating gut microbiota in ASD cases.
4
Total Studies on ADHD
Studies investigating gut microbiota in ADHD cases.
733
ASD Cases Included
Total ASD cases included across studies.