Stimulate melatonin production
Melatonin is a hormone that helps to regulate sleep. It has been shown to stimulate melatonin production, which can help to improve sleep quality and duration.
There are a few ways that you can increase your copper intake to help improve your sleep. You can eat foods that are rich in copper, such as shellfish, nuts, and dark leafy greens. You can also take a copper supplement. If you decide to take a supplement, be sure to talk to your doctor first to make sure it is safe for you.
References
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4808895/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6730497/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990348/
https://www.mdpi.com/2079-9284/5/2/29/htm