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Spotlight on the Gut Bacteria-Brain Connection in Autism… field was reflected by presentations at Neuroscience 2013 this week. The idea of a gut-brain connection isn’t new. It’s supported by a large body of research showing continuous communication between the bacteria that inhabit the digestive tract … brain development. Gut bacteria, propionic acid and autism For more than a decade, Derrick MacFabe and his autism research group at Western Ontario University have been investigating how certain antibiotic-resistant gut bacteria may interfere with … autism-like changes in brain development, as well as evidence of intestinal inflammation. Though preliminary, the findings support Dr. MacFabe’s theory that the production of propionic acid and related fatty acids by antibiotic-resistant gut …