Brain & Aging Four Times the Odds of Losing Bowel Control: An ADHD Gut Signal Tangled Up With the Medication
Stimulants list constipation, nausea, and stomach pain among their common side effects. Most of the 23 studies pooling 1.9 million people never separated the medicated from the unmedicated, so the gut signal and the drug effect sit tangled together.
By Sarah Okonkwo · September 12, 2026