Autism In Kids Linked To Gut Microbiome, Reveals New Study

A study from the Netherlands published in Nature Microbiology last Monday presents an alternative approach to achieving more objective autism diagnoses: examining the gut microbiome.

A total of 1,627 neurotypical children and children with autism, aged one to 13 (24.4% female), were recruited for the study, and their fecal samples were analyzed using metagenomics.

The study's findings are noteworthy because current methods rely on parental descriptions of their child’s behavior and professional observations, which are susceptible to human error.

Parents' perspectives may influence questionnaire responses, and providers may exhibit biases that contribute to underdiagnosing certain groups. Autism symptoms also vary widely, influenced by factors like culture and gender.

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Global Study Links Autism in Children With Gut Microbiome

After examining more than 1,600 stool samples from children aged 1 to 13, scientists behind the study detected biological indicators in samples from children with autism.

These distinctive traces include gut bacteria, fungi, viruses, and other elements, which could serve as the basis for a future diagnostic tool, as suggested by Qi Su, a researcher at the Chinese University of Hong Kong and one of the study's principal authors. Overall, the scientists identified 31 biological signatures or microorganisms.

In a completely separate set of samples, they assessed whether these markers could accurately distinguish which stool samples came from individuals with autism. According to Dr. Su, the model correctly predicted the samples nearly every time.

Using AI, the scientists explored whether the presence of the microorganisms or their functions could predict autism in children. They discovered that this approach had a higher diagnostic accuracy than examining a single type of microorganism, such as bacteria, alone. 

Therefore, a test that objectively diagnoses autism could potentially be developed by evaluating the presence and composition of these microorganisms or bugs in children, the authors claim.

For decades, scientists have delved into the human genome, medical histories, and brain scans in search of a dependable indicator of ASD, yet with limited success. The study, which serves as a roadmap for exploration into the gut microbiota and its potential link to autism, opens up numerous possibilities for future research.

What is autism?

Autism is a lifelong developmental disability that impacts individuals across a broad spectrum of behaviors and abilities. Studies suggest it may develop from a combination of genetic and environmental influences, with the cause still unknown.

According to the Centers for Disease Control and Prevention, people with autism may experience challenges with social, emotional, and communication skills. Some individuals may also find bright lights or loud noises overwhelming and stressful, or exhibit repetitive behaviors. It's important to note that autism is not an illness or disease.

Read here to know more about autism spectrum disorder or ASD.