What is humanin best known for?

Cytoprotection and neuroprotection: in cell and animal models it protects against amyloid-beta toxicity, oxidative stress and apoptosis. These effects have not been confirmed as treatments in controlled human trials.

Is there human evidence for humanin?

Yes, but it is largely observational: circulating humanin declines with age, is higher in centenarians' offspring, and correlates with vascular and cognitive measures. These are associations, not proof that dosing humanin helps.

Does humanin treat Alzheimer's disease?

No. It was discovered protecting neurons in Alzheimer's cell models, but there is no controlled clinical trial showing it treats or prevents Alzheimer's in people.

Is humanin safe to use?

There are no controlled human safety trials of administered humanin or its analogs, and no established human dose or pharmacokinetics, so its safety in people is unknown.

Research chemical — not approvedaka HN, MT-RNR2 peptide

Humanin — Complete Research Guide (2026)

Last updated 2026-06-25

TL;DR

A mitochondrial-derived peptide studied for cytoprotective and metabolic signaling roles in aging research.

What is Humanin?

Humanin is a 24-amino-acid mitochondrial-derived peptide encoded within the 16S rRNA region of mitochondrial DNA, first identified by Hashimoto and colleagues in the context of Alzheimer's disease. It is studied for cytoprotection, neuroprotection, and metabolism, but it is a research peptide and is not approved by the FDA, EMA, or any major regulator for any indication.

The interventional evidence is largely preclinical (cell and animal models), while human data are mostly biomarker/association studies (e.g., circulating levels versus age, longevity, and vascular or cognitive status), not controlled clinical trials.

How does Humanin work?

In laboratory models humanin acts as a cytoprotective, anti-apoptotic factor, interfering with Bax activation and JNK/ASK signaling and engaging receptor/signaling pathways (e.g., ERK, AKT, STAT3) to protect cells from oxidative stress, hypoxia, amyloid-beta and other insults.

These are mechanisms established in cells and animals rather than proven clinical mechanisms in humans. [INFOGRAPHIC: Humanin anti-apoptotic cytoprotection]

What does the research say about Humanin?

In neuronal cell cultures, humanin protected against cell death induced by familial Alzheimer's disease mutations and amyloid-beta, a cytoprotective effect demonstrated in vitro. ^[1]
In model organisms, humanin extended lifespan/healthspan, and centenarians' offspring showed higher circulating humanin, combining animal causal data with a human longevity association. ^[2]
In humans, higher circulating humanin was associated with preserved coronary endothelial function, an observational vascular association, not a demonstrated treatment benefit. ^[3]

Clinical research & studies

The references below are the primary sources cited throughout this guide. Each links directly to PubMed or the regulator. Where evidence is preclinical (animal or in-vitro), that is stated rather than implied.

[1] A rescue factor abolishing neuronal cell death by a wide spectrum of familial Alzheimer's disease genes and Abeta — Hashimoto Y et al., Proc Natl Acad Sci USA 2001. (in-vitro)
[2] The mitochondrial derived peptide humanin is a regulator of lifespan and healthspan — Yen K et al., Aging (Albany NY) 2020. (animal + human association)
[3] Circulating humanin levels are associated with preserved coronary endothelial function — Widmer RJ et al., Am J Physiol Heart Circ Physiol 2013. (human association)
[4] The emerging role of the mitochondrial-derived peptide humanin in stress resistance — Yen K et al., J Mol Endocrinol 2013. (review)
[5] Humanins, the neuroprotective and cytoprotective peptides with antiapoptotic and anti-inflammatory properties — Zapala B et al., Pharmacol Rep 2010. (review)
[6] Mitochondrial-derived peptide humanin as therapeutic target in cancer and degenerative diseases — Zuccato CF et al., Expert Opin Ther Targets 2019. (review)

Dosing context

This is not medical advice or a usage recommendation. Dosing figures are reported research context only, cited from the published literature.

Dosing information for humanin and potent analogs (e.g., HNG) comes from cell and animal experiments, and no validated human dose exists.

This material is for research context only and is not a dosing recommendation.

Side effects & safety profile

There are no controlled human clinical safety trials of administered humanin or its analogs; interventional evidence is preclinical, and human data are limited to observational measurements of endogenous levels.

Association studies (aging, Alzheimer's, cardiovascular status) cannot establish the safety or efficacy of dosing humanin in people.

No validated human pharmacokinetic profile or half-life is established, and this content does not endorse human use.

Stacking & combinations

Humanin is frequently discussed alongside other mitochondrial-derived peptides such as MOTS-c and the SHLPs in aging research, but no controlled human study validates any combination for efficacy or safety.

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Frequently asked questions

No. Humanin is a research peptide and is not approved by the FDA, EMA, or other regulators for any use.

References

[1] A rescue factor abolishing neuronal cell death by a wide spectrum of familial Alzheimer's disease genes and Abeta — Hashimoto Y et al., Proc Natl Acad Sci USA 2001. PMID: 11371646. View sourceStudy: in-vitroIdentified humanin as a secreted peptide that suppresses neuronal death from familial Alzheimer's mutations and amyloid-beta.
[2] The mitochondrial derived peptide humanin is a regulator of lifespan and healthspan — Yen K et al., Aging (Albany NY) 2020. PMID: 32575074. View sourceStudy: animal + human associationHumanin extended lifespan in C. elegans and improved healthspan markers in mice; centenarian offspring had elevated circulating humanin, which declines with age and in Alzheimer's disease.
[3] Circulating humanin levels are associated with preserved coronary endothelial function — Widmer RJ et al., Am J Physiol Heart Circ Physiol 2013. PMID: 23220334. View sourceStudy: human associationHigher circulating humanin correlated with better coronary endothelial function in patients.
[4] The emerging role of the mitochondrial-derived peptide humanin in stress resistance — Yen K et al., J Mol Endocrinol 2013. PMID: 23239898. View sourceStudy: reviewReview of humanin's cytoprotective and stress-resistance roles across cell, animal and early human data.
[5] Humanins, the neuroprotective and cytoprotective peptides with antiapoptotic and anti-inflammatory properties — Zapala B et al., Pharmacol Rep 2010. PMID: 21098860. View sourceStudy: reviewReview of humanin's anti-apoptotic, anti-inflammatory and neuroprotective mechanisms.
[6] Mitochondrial-derived peptide humanin as therapeutic target in cancer and degenerative diseases — Zuccato CF et al., Expert Opin Ther Targets 2019. PMID: 30582721. View sourceStudy: reviewReview of humanin's therapeutic potential and unresolved controversies (including its dual role in cancer).

Related peptides

MOTS-cLongevity & Anti-Aging EpitalonLongevity & Anti-Aging

This article is for educational and research purposes only. Peptides discussed here are not approved for human consumption by the FDA, EMA, or equivalent regulators outside of specific clinical contexts. Always consult a licensed medical professional before any therapeutic use.