(i) Sleep
When sleep doesn't come
For many autistic people, night is the hardest part of the day. The body is tired but the mind keeps scanning the room, the sheets feel wrong against the skin, and every small sound stands at full volume. Falling asleep is a skill the environment has to allow — and for autistic people, most environments don't.
Sleep difficulties in autism are not a habit problem or a discipline problem. Research points to real differences: many autistic people produce melatonin — the hormone that signals "night" — later and in smaller amounts, and a sensitive nervous system takes longer to downshift. Sleep can improve, but it needs to be engineered, not willed.
50–80%
of autistic children are estimated to have sleep difficulties — around twice the rate seen in other children. Many autistic adults report insomnia too.
Later melatonin
Research suggests many autistic people release the sleep hormone melatonin later in the evening, and in smaller amounts — the body's night signal simply arrives late.
A two-way street
Poor sleep heightens sensory sensitivity, makes emotions harder to regulate and lowers the threshold for overload — while a stressful day, in turn, keeps sleep away.
Why sleep is harder
A late melatonin rhythm, a nervous system that stays on alert, sensory sensitivities to light, sound and bedding texture, and a busy mind that replays the day. Co-occurring anxiety and some medications can add to it.
What one bad night costs
After poor sleep, sounds feel louder, changes feel bigger and coping runs out sooner. Many behaviours that look like "a hard day" are really the accumulated cost of weeks of thin sleep.
What actually helps
The same foundations that help everyone — routine, darkness, rhythm — help more when they're matched to the person's senses and followed consistently. Small, steady changes beat dramatic ones.
Things to try
Six steady habits
Keep one steady rhythm
Same bedtime and wake time, seven days a week — including weekends. A predictable sleep window trains the body clock better than sleeping in ever can.
Build a wind-down hour
The last hour before bed follows the same quiet script every night: dim lights, low sound, the same order of small rituals. The brain learns the pattern and starts slowing down on cue.
Make the bedroom fit the senses
Blackout curtains for darkness, white noise or earplugs for quiet, and bedding in a texture the person actually likes. A weighted blanket helps some people feel settled — it's a preference, not a prescription.
Dim the evening, brighten the morning
Warm, low light after dinner and bright light soon after waking. Screens late at night keep the brain alert, so park them well before bed — or at least switch them to night mode.
Watch food, caffeine and exercise
No caffeine after early afternoon — it lingers far longer than it feels like. Regular movement during the day deepens sleep, but vigorous exercise too close to bedtime revs the body up.
Park the busy mind
Racing thoughts are one of the biggest sleep thieves. Writing tomorrow's worries down earlier in the evening, or listening to a familiar story or podcast, gives the mind something calm to hold.
When to get extra help
If sleep problems persist despite a good routine — or daytime functioning is suffering — it's worth talking to a doctor. Sleep specialists can check for treatable causes, and adapted cognitive behavioural therapy for insomnia (CBT-I) works for many autistic adults. Melatonin is sometimes prescribed for autistic sleep difficulties, but it belongs under medical guidance rather than as a self-chosen nightly supplement.
See the wider support guide