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10.1038/aps.2015.47 Acta Pharmacol

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[DOI] [PMC free article] [PubMed] [Google Scholar] 21.Kotliarova A., Sidorova Y.A

In addition, many natural substances (such as root and bark extracts) have not been thoroughly studied and may in fact contain hormonally active chemicals that are actually detrimental to male fertility

Given that deep sleep is when the body does most of its repair and growth hormone secretion, DSIP has relevance extending well beyond sleep research
