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News
A major meta-analysis of 1.9 million people finds that individuals with ADHD are significantly more likely to experience a wide range of gastrointestinal symptoms compared to neurotypical people. From constipation to IBS to encopresis, nearly every gut symptom studied showed a notable association with ADHD. Clinicians are being urged to take a more holistic approach when managing ADHD patients.
A large-scale meta-analysis of over 1.9 million people across 23 studies has found a striking link between ADHD and gastrointestinal (GI) health. Published in the Journal of Attention Disorders, the study — led by researchers at the University of Warwick — is the first systematic review dedicated specifically to GI symptoms in people with ADHD. Participants ranged in age from 2 to 65, and the findings were consistent across 11 countries.
Across nearly every GI symptom examined, people with ADHD fared worse than their neurotypical peers. Researchers aren't yet sure what's driving the connection, but leading theories include ADHD-related traits like impulsivity and irregular eating, medication side effects, and differences in the gut microbiome that may affect communication along the gut-brain axis.
By the Numbers:
Why it matters: These findings signal that GI symptoms in ADHD patients may be routinely overlooked when clinical focus stays narrowly on behavioral or cognitive symptoms. Clinicians are encouraged to proactively ask ADHD patients about digestive health — and refer to dietitians or gastroenterologists when needed.
