
Circadian Delays: New Research Links Late Sleep Patterns to ADHD Biology
Emerging research suggests a significant link between ADHD and delayed circadian rhythms, often referred to as being a 'night owl.' A 2025 review indicates that adults with ADHD experience melatonin onset approximately 90 minutes later than the general population, while children show a delay of about 45 minutes. This biological timing difference may explain why many individuals with ADHD struggle with early mornings and school schedules, shifting the focus from behavioral discipline to physiological timing.








