ADHD, emotional regulation and sleep.

Sleep difficulties in ADHD are often explained through delayed circadian rhythms, medication or an overactive mind. This new study highlights another important part of the picture: difficulty regulating emotions.

Among more than 1,400 adults with ADHD, greater emotion regulation difficulties were associated with more severe insomnia symptoms. What stood out most was not simply experiencing strong emotions, but having limited access to effective strategies for managing them.

This makes intuitive sense. Going to bed does not automatically switch off an unresolved argument, frustration, rejection, worry or emotional overload from the day. The body may be tired while the nervous system remains activated.

The findings do not show that emotion regulation difficulties cause insomnia, because the study was cross-sectional and relied on self-reported diagnoses. Sleep deprivation can also make emotional regulation more difficult, so the relationship may work in both directions.

Still, this research reminds us that supporting sleep in ADHD may require more than sleep-hygiene advice. Sometimes we also need to ask what emotional state the person is taking to bed, and whether they have reliable ways to come down from it.

Research reference

https://doi.org/10.1016/j.jad.2026.121941