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title: "Biological Aging | PepTracker Pro"
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[Glossary](/glossary)/ Biological Aging 

Research 

# Biological Aging

## Definition

The gradual decline in physiological function that occurs over time, distinct from chronological age.

## Why It Matters

Peptides like Epithalon and GHK-Cu are studied in the context of slowing biological aging markers.

## Related Terms

[Biomarker](/glossary/biomarker)[Telomerase](/glossary/telomerase)[Telomere](/glossary/telomere)

## Related Peptides

[Abaloparatide 

Abaloparatide (Tymlos) is a synthetic 34-amino-acid analog of parathyroid hormone-related protein, PTHrP(1-34), engineered to bind the PTH1 receptor with a strong preference for its transient RG conformation rather than the long-lived R0 conformation favored by teriparatide. That receptor bias produces a shorter burst of signaling per injection - enough to drive osteoblast activity, but short enough to limit the bone resorption and calcium mobilization that follow a prolonged signal. In the 18-month Phase 3 ACTIVE trial in 2,463 postmenopausal women, abaloparatide 80 mcg daily reduced new morphometric vertebral fractures by 86% versus placebo, alongside significant reductions in nonvertebral, major osteoporotic and clinical fractures. The FDA approved Tymlos in April 2017; in December 2021 the osteosarcoma boxed warning and the two-year cumulative lifetime limit were both removed from the label.

](/peptides/abaloparatide)[CJC-1295 

A growth hormone releasing hormone analog studied for stimulating growth hormone secretion.

](/peptides/cjc-1295)[CJC-1295 (DAC) 

A long-acting GHRH analog with an extended half-life due to its Drug Affinity Complex modification.

](/peptides/cjc-1295-dac)[Dihexa 

A hexapeptide analog studied for cognitive enhancement via hepatocyte growth factor pathway activation.

](/peptides/dihexa)

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