Does spermidine administration affect the lifespan of various organisms and human cells?
Spermidine, an animal study (Nature Cell Biology 2009, PMID 19801973) — depletion of endogenous polyamines resulted in hyperacetylation, increased reactive oxygen species, early necrotic death, and reduced lifespan. No numeric effect size is reported for Spermidine in the source abstract.
Source: Nature Cell Biology 2009, PMID 19801973 ↗ · Research map · How Magellan grades evidence · evidence confidence: low
Nature Cell Biology · 2009 · PMID 19801973 · DOI 10.1038/ncb1975
Spermidine extends lifespan and reduces oxidative stress by triggering autophagy through epigenetic changes in various organisms and human cells.
The question
Does spermidine administration affect the lifespan of various organisms and human cells?
What they tested
The study investigates whether spermidine, a natural polyamine, can extend lifespan and inhibit oxidative stress by inducing autophagy.
How they did it
Spermidine was administered to yeast, flies, worms, and human immune cells to observe its effect on lifespan. Its impact on oxidative stress was assessed in ageing mice. The study also examined the epigenetic effects of spermidine on histone H3 acetylation and the expression of autophagy-related transcripts in yeast, flies, worms, and human cells. The role of autophagy in polyamine-induced longevity was also investigated.
What they found
Spermidine administration significantly extended the lifespan of yeast, flies, worms, and human immune cells. It also potently inhibited oxidative stress in ageing mice. In ageing yeast, spermidine treatment inhibited histone acetyltransferases (HAT), leading to epigenetic deacetylation of histone H3, which suppressed oxidative stress and necrosis. Depletion of endogenous polyamines resulted in hyperacetylation, increased reactive oxygen species, early necrotic death, and reduced lifespan. The altered chromatin acetylation status led to significant upregulation of autophagy-related transcripts, inducing autophagy in yeast, flies, worms, and human cells. Enhanced autophagy was found to be crucial for polyamine-induced suppression of necrosis and increased longevity.
What it means
Spermidine administration promotes longevity across multiple species and in human cells by inducing autophagy, which is mediated by epigenetic deacetylation of histone H3 and suppression of oxidative stress and necrosis.
Limitations
The abstract does not explicitly state any limitations of the study.
Where the published abstract does not list limitations, we say so rather than inventing them. Read the full paper on PubMed before drawing conclusions.
The paper at a glance
| Title | Induction of autophagy by spermidine promotes longevity. |
|---|---|
| Journal | Nature Cell Biology |
| Year | 2009 |
| PMID | 19801973 ↗ |
| DOI | 10.1038/ncb1975 ↗ |
| Topic | Senescence, senolytics & the hallmarks of aging |
Read the source: PubMed record (authors, abstract, full citation) ↗ · Publisher via doi.org ↗
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Spermidine (Wheat-Germ Extract)
In model organisms (yeast, worms, flies and mice) spermidine induces autophagy and extends lifespan, and in rodents it reduces age-related cardiac dysfunction and blood pressure and improves memory. Human evidence is earlier-stage and genuinely mixed.
All-in-One Longevity Formulation
Several of NOVOS Core's ingredients have genuine, though mostly early-stage, human or animal evidence relevant to aging: trials of GlyNAC (glycine plus N-acetylcysteine) improved oxidative stress, mitochondrial function, strength and walking performance in older adults — though at glycine doses far above what the…
Spermidine is a naturally occurring polyamine present in all human cells and obtained from the diet…
NOVOS Core is a multi-ingredient dietary supplement marketed for longevity that combines about a dozen…
Research describes the compound or intervention studied. It is not a claim about any specific product.
Molecules & mechanisms in this paper
Each of these is named in the paper’s own words above. Open the monograph for the full mechanism and its other citations.
Cite this page
These citations point at this summary. To cite the original paper with its full author list, use the PubMed record or doi.org.
Magellan Longevity. (2026). Does spermidine administration affect the lifespan of various organisms and human cells? [Plain-English summary of Nature Cell Biology 2009, PMID 19801973, DOI 10.1038/ncb1975]. Magellan Longevity. https://magellanlongevity.com/study/spermidine_autophagy.html@misc{magellan_spermidine_autophagy,
title = {Does spermidine administration affect the lifespan of various organisms and human cells?},
author = {{Magellan Longevity}},
year = {2026},
howpublished = {\url{https://magellanlongevity.com/study/spermidine_autophagy.html}},
note = {Plain-English summary of PubMed PMID 19801973; DOI 10.1038/ncb1975; Nature Cell Biology 2009. Reviewed by Gabriel Radu, DO},
urldate = {2026-08-11}
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