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hubie [soylentnews.org] writes:

A new study from Uppsala University shows that using a weighted blanket at bedtime increases melatonin in young adults [www.uu.se]:

Previous research has shown that weighted blankets may ease insomnia in humans. However, the underlying mechanisms are not fully understood. Hence, researchers from Uppsala University in Sweden experimented with 26 young men and women to examine if the bedtime use of a weighted blanket increases the production of sleep-promoting and anti-stress hormones like melatonin and oxytocin. In addition, they investigated whether the bedtime use of a weighted blanket (12 percent of participants' body weight) reduced the activity of stress systems in the body. [...]

"Using a weighted blanket increased melatonin concentrations in saliva by about 30 percent. However, no differences in oxytocin, cortisol, and the activity of the sympathetic nervous system were observed between the weighted and light blanket conditions," says Elisa Meth, first author and Ph.D. student at the Department of Pharmaceutical Biosciences at Uppsala University.

Journal Reference:
Elisa M. S. Meth, Luiz Eduardo Mateus Brandão, Lieve T. van Egmond, et al., A weighted blanket increases pre-sleep salivary concentrations of melatonin in young, healthy adults [open], J Sleep Res, 2022. DOI: 10.1111/jsr.13743 [doi.org]

Original Submission