Insomnia Could Be the Hidden Cause of Poor Quality of Life in Adults with ADHD, Finds Study

Those affected by attention-deficit/hyperactivity disorder (ADHD) in most adult lives with reduced happiness and life satisfaction; however, new scientific research indicates that it is not ADHD that is to blame. Rather, the severity of insomnia seems to be a moving force behind aggravated ADHD symptoms, as well as decreased quality of life among middle-aged and older adults.

The comprehensive study, conducted by researchers from the University of Southampton, UK, and the Netherlands Institute for Neuroscience, analysed data from 1,364 participants with a mean age of 52 years. Published in BMJ Mental Health, the research marks the first time scientists have directly linked insomnia severity, rather than general sleep quality or circadian rhythm disruptions, to both ADHD traits and life satisfaction in this demographic.

The research team examined responses from the Netherlands Sleep Registry, focusing on ADHD traits, sleep disturbances, bedtime patterns, depression levels, and quality of life measures. Their results demonstrated a striking trend: people reporting an ADHD experience had consistently worsened insomnia, worse sleep quality, and later sleep schedules.

As Dr. Sarah L. Chellappa, the associate professor at the University of Southampton and the senior author of the research, noted, their results indicated an association between ADHD traits, insomnia severity, and lower levels of life satisfaction. We understand that neurobehavioral and cognitive systems, such as attention and emotional regulation, may be affected by disruptive sleep.

The research uncovered a troubling cycle where ADHD-related impulsivity and hyperactivity contribute to sleep disruption, which then exacerbates ADHD symptoms, creating a self-reinforcing pattern of deteriorating mental health.

The statistics are striking: at least 25% of adults with ADHD self-report sleep disorders, with insomnia being the most prevalent. Previous research has shown that 43-83% of adults with ADHD experience insomnia, regardless of whether they're taking ADHD medication. This suggests that traditional stimulant treatments, while effective for core ADHD symptoms, may not adequately address the sleep component.

"Adults with ADHD traits are diagnosed with sleep disorders about eight times more than the general population," noted the researchers. These disorders manifest as delayed sleep onset, increased nighttime movement, daytime sleepiness, and shortened nighttime sleep duration.

While the sleep-ADHD relationship presents a chicken-and-egg scenario, researchers emphasise that sleep disorders are more treatable than altering genetic circadian rhythms. This offers hope for millions of adults struggling with ADHD-related quality of life issues.

The study highlights cognitive behavioural therapy for insomnia (CBT-I) as a promising intervention. Unlike medication-based approaches, CBT-I addresses the behavioural and psychological factors contributing to sleep problems, potentially breaking the destructive cycle between poor sleep and ADHD symptoms.

"By improving our understanding, we could uncover treatment options that improve the quality of life of people with ADHD," said co-author Professor Samuele Cortese from the University of Southampton. "For instance, targeting insomnia complaints in individuals with higher ADHD traits, with cognitive behavioural therapy for insomnia or sleep restriction therapy may help improve their quality of life."

This research carries significant implications for healthcare providers treating adult ADHD patients. The findings suggest that comprehensive treatment should address both ADHD symptoms and sleep disturbances simultaneously, rather than treating them as separate issues.

The study also shines a light on the understudied population of older adults with ADHD, many of whom received late diagnoses and have been largely overlooked by the medical community. Poor sleep in midlife and beyond has been linked to chronic diseases, making insomnia treatment potentially beneficial for broader health outcomes.

As our understanding of this complex relationship deepens, targeted sleep interventions may offer a new pathway to dramatically improve life satisfaction for adults living with ADHD, transforming what has long been considered an intractable quality of life issue into a treatable condition.