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What it is
Humanin is a small peptide encoded within mitochondrial genetic material. It was discovered in surviving brain tissue from a person with Alzheimer disease and became the first recognized member of a broader mitochondrial-derived peptide family.
Natural Humanin circulates in the body, and measured levels tend to change with age and metabolic health. Synthetic Humanin and stronger analogs such as HNG have mainly been tested in cells and animals.
What people research it for
Cell-protection findings
Preclinical / theorizedHumanin and analogs protect cells in several laboratory injury models.
Animal metabolic effects
Animal studiesRodent studies report improved insulin sensitivity and protection from some age-related metabolic changes.
Animal cognition findings
Animal studiesMouse studies report less age-related cognitive decline or improved outcomes in Alzheimer-like models.
Human associations are not treatment evidence
Early human dataCirculating Humanin levels correlate with age and health measures, but intervention trials are lacking.
How it works
Humanin can bind several intracellular and cell-surface partners involved in programmed cell death, inflammatory signaling, and metabolism. Reported pathways include Bax inhibition and signaling through a receptor complex that activates STAT3.
The peptide appears to act as a stress signal between mitochondria and the rest of the cell. Because it affects cell survival and insulin signaling, possible benefits and risks depend heavily on context.
What the research actually shows
Humanin was identified in a screen for factors that protected cultured neurons from Alzheimer-related toxicity. Subsequent cell studies reported interactions with apoptosis proteins and stress-response pathways.
Mouse experiments using Humanin or the S14G analog HNG report improvements in insulin sensitivity, inflammatory markers, fibrosis, physical performance, or cognition depending on the model.
A long-term mouse study found healthspan-related improvements but did not demonstrate longer lifespan under the tested conditions. This distinction is often lost in longevity marketing.
Studies in long-lived animal species and human cohorts report associations between circulating Humanin and age or metabolic traits. Association cannot show that adding synthetic Humanin produces the same outcome.
Reviews of mitochondrial-derived peptides conclude that Humanin is biologically important and therapeutically interesting, while emphasizing unresolved pharmacology, delivery, and translation.
No completed controlled human trial has established a Humanin product for Alzheimer disease, diabetes, cardiovascular disease, or longevity.
Handling & storage
Storage at a glance
Vendor consensus- Lyophilized
- -20°C
- Keep sealed, dry, and protected from light and moisture.
- Reconstituted
- 2 to 8°C
- Use the product-specific laboratory instructions. No independently validated universal in-use period was found.
- Light
- Protect from light and moisture.
- Room temperature
- Brief shipping exposure is not a validated shelf life. Avoid sustained heat.
- Reconstitution
- product-specific laboratory solvent
- A research vial must not be assumed sterile or suitable for injection.
Basis: Vendor consensus. Sources: American Peptides Humanin technical page, Molecular Depot Humanin technical page
American Peptides specifies -20°C for dry Humanin. Molecular Depot also specifies frozen storage near -20°C for its research reagent.
These instructions apply to research reagents, not a clinical product. The exact sequence matters because native Humanin and analogs such as HNG are not interchangeable.
Safety & cautions
Human safety, pharmacokinetics, interactions, and long-term exposure are not established. Because Humanin changes cell-death and growth-related signaling, effects in active cancer are a theoretical concern that has not been resolved clinically.
Metabolic effects could also interact unpredictably with diabetes treatment or fasting. Research products add identity, purity, sterility, and endotoxin uncertainty.
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Frequently asked questions
Is Humanin made by mitochondria?
Yes. It is encoded within mitochondrial genetic material and acts as a mitochondrial stress signal.
Is Humanin FDA approved?
No.
Does Humanin extend lifespan?
A mouse study reported several healthspan improvements but did not show lifespan extension under the tested conditions.
Has Humanin been tested as a drug in people?
No controlled clinical trial has established a Humanin treatment.
Is HNG the same as Humanin?
No. HNG is the S14G Humanin analog, designed to be more potent in laboratory models.
How should laboratory Humanin be stored?
Technical suppliers specify frozen dry storage near -20°C and solvent-specific handling for prepared stock solutions.
Sources
- Humanin lifespan and healthspan mouse study
- Humanin and mitochondrial-derived peptide review
- Mitochondrial-derived peptides in aging review
- Mitochondrial-derived peptides in energy metabolism
- Humanin stress-resistance review
- Humanin and SHLP2 chaperone activity
- American Peptides Humanin technical page
- Molecular Depot Humanin technical page
Last reviewed September 17, 2026. This guide is educational and research-focused, not medical advice. Humanin products referenced on PeptidePub are sold by third parties as materials for laboratory research use only, not for human or animal consumption.
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