Too little or too much sleep makes migraines worse — and stress is part of the reason

A large study published in Headache found that adults with migraine who sleep too little or too much face a significantly heavier migraine burden than those clocking a healthy 7–9 hours a night. Researchers analyzed data from over 6,200 migraine sufferers and found that both extremes of sleep duration were tied to more headache days per month and greater disability — with long sleepers faring the worst.

Perceived stress emerged as a key middleman in this relationship, partially explaining the connection between abnormal sleep and worse migraine outcomes. Stress accounted for nearly half of the link between short sleep and headache frequency, and up to 70% of the link between short sleep and disability scores.

By the Numbers:

• Short sleepers had 10.9% more monthly headache days and 13.6% higher disability scores vs. normal sleepers
• Long sleepers had 27.1% more monthly headache days and a striking 66% higher disability scores vs. normal sleepers
• Perceived stress explained ~48% of short sleep's link to headache days and ~70% of its link to disability

Why it matters: These findings highlight sleep and stress management as potentially modifiable targets in migraine care. While the study's cross-sectional design limits causal conclusions, clinicians may want to routinely screen migraine patients for sleep issues and stress as part of a holistic treatment approach.