Weighted blankets may help promote sleep in patients with insomnia by prompting the release of a higher concentration of melatonin, according to results from a small, in-laboratory crossover study.
Study Done in Healthy Volunteers
On the test nights, lights were dimmed between 9 PM and 11 PM and participants used a weighted blanket covering the extremities, abdomen, and chest 1 hour before and during 8 hours of sleep. As the authors explain, the filling of the weighted blanket consisted of honed glass pearls, combined with polyester wadding, which corresponded to 12.2% of participants' body weight.
On average, salivary melatonin concentrations rose by about 5.8 pg/mL between 10 PM and 11 PM , but the average increase in salivary melatonin concentrations was greater under weighted blanket conditions at 6.6 pg/mL compared with 5.0 pg/mL during the lighter blanket session may have some benefit from melatonin supplements, as may the elderly who can no longer produce sufficient amounts of melatonin and for whom supplements may help promote the timing of sleep.
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