Longevity research.

Longevity and cellular aging is the broadest research area in the catalog because four distinct subfields converge under it. Telomere research (Epitalon is the most studied compound here) sits alongside mitochondrial signaling research (Humanin, MOTS-c, SS-31), senolytic research (FOXO4-DRI, the Quercetin family), and the Khavinson bioregulator series (Pinealon, Cortexin, Livagen, Vilon, Crystagen, and over a dozen others). Each subfield measures different things and uses different experimental setups, which is why this category has 19 entries, the largest in the library after Skin and Hair.

The Khavinson short peptide bioregulator series deserves a particular note. Developed over decades of Russian research, the series consists of two to four amino acid peptides each designed to target one specific tissue type (thymus, pineal, retina, liver, kidney, vascular, gastric, and others). The published research framing for these compounds is unusual: they are studied in tissue specific aging models rather than disease models. Apothify catalogs them under Longevity because that is where the published research is most consistent.

Aging research also touches every other category on the site. Telomere research overlaps with immunity (Vilon and Crystagen are immune tissue bioregulators). Mitochondrial research overlaps with body composition (MOTS-c appears in both literatures). Central nervous system aging overlaps with cognition (Cortexin, Pinealon). The Compare tool helps when comparing two compounds across those overlaps.