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DSIP Quick Start DSIP, or delta sleep-inducing peptide, is a small nine-amino-acid peptide that was first isolated from the cerebral venous blood of sleeping rabbits in the 1970s

Limitations in study design and sample characteristics may partly explain why naltrexone did not significantly alter the effects of ketamine on anhedonia or self-reported depression measures

Our comparison of peptides vs retinol explains why the two are complementary rather than interchangeable

Social and cognitive engagement Remaining socially and cognitively active throughout life may support brain health and possibly reduce the risk of Alzheimer's and other dementias