Sleep & stress research.

Sleep and stress response research is a smaller and more focused category than growth hormone or longevity, but the questions are distinct. Two compounds anchor it. DSIP (delta sleep inducing peptide), a nine amino acid endogenous peptide, is investigated in slow wave sleep research. Selank sits at the intersection of cognition and stress and is studied in anxiolytic models. The category also covers Galanin and a small set of neuropeptides that touch on circadian rhythm.

What makes this area distinctive is the experimental readout. Sleep research in cell and animal models is largely electrical: researchers study how a compound changes EEG sleep stages, transition timing, or arousal thresholds. Stress response research uses hormonal and behavioral readouts. Both sit downstream of central nervous system signaling, which is why several peptides on the site (Selank, Cortexin) appear in both this category and Cognition and Focus.

Two peptides here come from the Khavinson bioregulator series, including pineal tissue research peptides studied in circadian and aging contexts. The library entries describe the published research framing without making claims about personal use. Every entry is for laboratory research only.