Neurodevelopmental conditions such as Attention-Deficit/Hyperactivity Disorder (ADHD) are usually framed as brain-based disorders driven by genetics and neurotransmitter imbalance. At the same time, converging evidence implicates the gut-brain axis and intestinal immunity in shaping cognition and behavior. In this Hypothesis and Theory article, I propose that a subset of ADHD and related neurodivergent profiles can be usefully conceptualized as neurointestinal syndromes, emerging from…
