Knowledge Library

Sleep & Mental Health

Explore the relationship between sleep, mood, stress, attention and everyday mental functioning.

Understanding This

Sleep is closely connected with attention, emotional regulation, energy and mental functioning. Difficulty sleeping can occur during periods of stress and can also accompany mental-health conditions. Persistent insomnia, excessive sleepiness or major changes in sleep deserve attention when they affect daily life.

What Someone May Experience

Difficulty falling asleep

Waking repeatedly during the night

Waking much earlier than intended

Sleeping much longer than usual

Feeling unrefreshed after sleep

Daytime fatigue or sleepiness

Changes in concentration, mood or irritability

What May Help

Keeping a reasonably consistent sleep and wake schedule

Discussing persistent sleep problems with a healthcare professional

Reviewing medications, substances, stress and medical factors with a clinician

Reducing stimulation and creating a predictable wind-down routine

Treating underlying mental-health or sleep disorders when present

When to Reach Out

Seek professional guidance when sleep problems persist, worsen, interfere with functioning or occur alongside significant mood, anxiety or other health changes.

Related SAGE Resources

Trusted Sources

These are the organizations SAGE used to build and verify this information. They are shown for transparency. SAGE does not send you away from this page automatically.

National Institute of Mental Health — Caring for Your Mental Health


                        https://www.nimh.nih.gov/health/topics/caring-for-your-mental-health

National Institute of Mental Health — Sleep-Wakefulness


                        https://www.nimh.nih.gov/research/research-funded-by-nimh/rdoc/constructs/sleep-wakefulness

Information checked: 2026-09-28