India, Nov. 15 -- Autism has been linked to gut bacteria for the longest time. Over the years, supplements and specialised diets targeting gut bacteria and claiming to reduce autism have entered the market. However, experts have stated otherwise. A major scientific review in the journal Neuron examined the theories and found several flaws and contradictions.

According to researchers, the gut-brain function's link to autism is supposedly based on three pillars: clinical trials, observational studies, and mouse experiments. However, none of these stand up to scientific scrutiny.

When autistic children were tested for scientific research, it revealed that they had higher gut bacteria diversity than others. However, another study contradict...