Humanin
Educational information only — not medical advice. Many listed compounds are not FDA-approved for human use. Consult a licensed clinician before starting, changing, or stopping any protocol.
Overview
Humanin is a short peptide made up of 24 amino acids and was the first identified member of a group called mitochondrial-derived peptides — small molecules encoded within mitochondrial DNA rather than the nuclear genome. It was originally described in research screening for factors that could protect neurons against Alzheimer’s-associated cell death.
Since that discovery, humanin has been studied for broad cytoprotective and anti-apoptotic properties — that is, its apparent ability to help cells resist programmed death under stress. Much of this interest centres on neurological health and longevity, though effects have also been explored in models of metabolic and cardiovascular disease.
The bulk of the evidence to date comes from laboratory and animal studies. Human clinical data remains limited, and humanin is not approved by any major regulator for therapeutic use.
How it works
In preclinical research, humanin is reported to interact with pro-apoptotic proteins such as Bax, which may help prevent cells from undergoing programmed death under stress. It has also been studied as a signalling molecule acting through cell-surface receptor pathways associated with cell survival, metabolism, and inflammation.
Researchers have additionally observed that circulating humanin levels tend to decline with age in animal models, and some studies have associated higher levels with markers of healthy aging. The precise mechanisms in humans are not established.
Reported benefits
- Cytoprotective and anti-apoptotic effects on cells under stress (preclinical data)
- Neuroprotective activity in models of neurodegeneration
- Anti-inflammatory signalling reported in laboratory studies
- Interest in metabolic and longevity-related pathways (animal data)
These are reported and studied effects, not guaranteed outcomes.
Considerations & side effects
Because rigorous human trials are lacking, the safety profile of humanin in people is not well characterized, and long-term effects are unknown. Most of what is understood comes from cell and animal research, which does not always translate to humans.
Purity and consistency vary widely in the research-chemical market. Humanin is not a substitute for evaluation and treatment by a qualified clinician.
Frequently asked
What is humanin?
Humanin is a small peptide (24 amino acids) encoded within mitochondrial DNA. It was the first identified member of a class known as mitochondrial-derived peptides, and is studied for cytoprotective and anti-apoptotic effects, particularly in the context of neurological health and aging.
Is humanin FDA-approved?
No. Humanin is not approved by the FDA or any major regulator for human therapeutic use. It is studied in research settings only.
What makes humanin unusual compared with other peptides?
Most bioactive peptides are encoded by nuclear genes. Humanin is one of a small group encoded within the mitochondrial genome itself, which is why it is described as a mitochondrial-derived peptide.
What is HNG?
HNG is a synthetic humanin analogue (a modified version of the natural sequence) frequently used in research because it is reported to be more potent than the native peptide in laboratory models.
How is humanin studied?
Most evidence comes from cell and animal models. Human clinical data is limited, so its effects and safety in people are not well established.
References
- Lee C, Yen K, Cohen P. Humanin: a harbinger of mitochondrial-derived peptides? ↗
- Kim SJ, et al. The mitochondrial derived peptide humanin is a regulator of lifespan and healthspan. ↗
- Gong Z, et al. Humanins, the neuroprotective and cytoprotective peptides with antiapoptotic and anti-inflammatory properties. ↗
Related compounds
Nicotinamide adenine dinucleotide. Essential coenzyme for cellular energy production and DNA repair. Levels decline with age. Administered via injection to bypass digestive breakdown.
Mitochondria-targeted tetrapeptide that stabilizes cardiolipin in the inner mitochondrial membrane. Reduces oxidative stress and supports cellular energy production.
A gut-derived postbiotic that induces mitophagy, the recycling of damaged mitochondria. Human RCTs (250-1000mg/day) show improvements in muscle strength, endurance, and mitochondrial gene expression. A supplement, not a peptide.