The short answer
Possibly, but the evidence rests mainly on one trial. In Sweden, 120 people with depression, bipolar disorder, anxiety or ADHD who slept with a heavy chain blanket for 4 weeks had much less insomnia than those with a light one. It hasn't been repeated in people without these conditions. Weighted blankets are safe for most adults but not for babies or young children.
Weak evidence
Small or short studies, surveys, or results that are mixed. How we grade
On this page
Why might a heavy blanket help?
The idea is that firm, even pressure across the body, like a hug, has a calming effect and reduces the physical arousal that keeps people awake. Weighted blankets were first used by occupational therapists for children with autism and sensory difficulties. The theory is plausible, but there’s little direct proof of how it works.
What did the main trial find?
Researchers at the Karolinska Institute in Stockholm randomly gave 120 outpatients with insomnia and depression, bipolar disorder, generalised anxiety disorder or ADHD either a weighted metal chain blanket or a light plastic chain blanket, for 4 weeks.
- People with the weighted blanket had much lower insomnia scores than those with the light blanket, a large effect.
- Wrist monitors showed they woke less in the night and were more active in the day.
- They also reported less fatigue, depression and anxiety during the day.
- No serious side effects were reported. In a 12-month follow-up, people who kept using the weighted blanket kept the benefit.
It was a well-designed trial, but it’s one trial, in people with psychiatric conditions, and people could probably tell which blanket was heavy. We’d want to see it repeated, and tested in people with insomnia alone, before grading the evidence higher.
Who shouldn’t use one?
- Babies and young children, because of the risk of suffocation.
- Anyone who can’t easily move the blanket off themselves, including some frail older people.
- People with sleep apnoea, breathing or circulation problems, unless a doctor agrees.
Weighted blankets can also make you hot, which disturbs sleep. Look for a breathable cover in summer.
Is it worth trying?
If you have anxiety or depression with insomnia and can afford one, a weighted blanket is a low-risk thing to try alongside proper treatment. Buy from a seller with a returns policy, as some people find them too warm or restrictive. For long-term insomnia, CBT for insomnia remains the treatment with the best evidence.
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Weak
Common questions
How heavy should a weighted blanket be?
Manufacturers usually suggest about 10% of your body weight. You should be able to move it off yourself easily.
Are weighted blankets safe for children?
Never use one for a baby or toddler, as it can cause suffocation. For older children, ask a health professional first, and make sure the child can easily remove it.
Do weighted blankets help anxiety?
In the Swedish trial, people using the weighted blanket reported less daytime anxiety and depression as well as less insomnia. Other studies are small, so the evidence is limited.
References
First published 4 November 2026. Spotted an error? Tell us and we'll correct it. Read our editorial policy.