Beyond the Brain: Attention Deficit/Hyperactivity Disorder and the Gut-Brain Axis

Jan 24, 2025Cureus

Attention Deficit/Hyperactivity Disorder and Its Links to Gut and Brain Communication

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Abstract

Alterations in gut microbiota may influence the development and manifestation of ADHD symptoms.

Gut microbiota plays a role in systemic physiology, including immune modulation and neuronal signaling.
The gut-brain axis facilitates communication between gut microbes and the central nervous system.
Disruption of this gut-brain communication may be implicated in neurodevelopmental disorders like ADHD.
Microbial metabolites could affect neurotransmitter modulation and neuroinflammation related to ADHD.
Dietary interventions and probiotic approaches are discussed as potential strategies for managing ADHD symptoms.

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Attention-deficit/hyperactivity disorder (ADHD) is a complex neurodevelopmental condition, predominantly affecting children, characterized by inattention, hyperactivity, and impulsivity. A growing body of evidence has highlighted the potential influence of the gut microbiota on the onset and presentation of ADHD symptoms. The gut microbiota, a diverse microbial ecosystem residing within the gastrointestinal tract, exerts multiple effects on systemic physiology, including immune modulation, metabolic regulation, and neuronal signalling. The bidirectional gut-brain axis serves as a conduit for communication between gut microbes and the central nervous system, implicating its disruption in neurodevelopmental disorders such as ADHD. This comprehensive literature review aims to shed light on how alterations in the gut microbiota influence the development and manifestation of ADHD symptoms. Examining potential mechanisms involving gut microbial metabolites and their impact on neurotransmitter modulation, neuro-endocrine signalling and neuroinflammation, we dissect the intricate interplay shaping ADHD pathology. Insights into these complex interactions hold promise for personalized therapeutic interventions aimed at modulating the gut microbiota to ameliorate ADHD symptoms. Discussions encompass dietary interventions, faecal microbiota-targeted therapies, and emerging probiotic approaches, underscoring their potential as adjunctive or alternative strategies in managing ADHD. Further research elucidating the precise mechanisms driving these interactions may pave the way for targeted and personalized interventions for individuals grappling with ADHD.

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Beyond the Brain: Attention Deficit/Hyperactivity Disorder and the Gut-Brain Axis

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