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Cited by 74Genetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and SenescenceAging and Gerontology Research

The DOI matches its Crossref record; 5 of the 5 references it cites were found in a registry or an index; none of the 2 sources its claims cite is checked for support yet.

Science fact and the SENS agenda: What can we reasonably expect from ageing research?

Open access
Warner, Huber, Anderson, Julie, Austad, Steven, Bergamini, Ettore, Bredesen, Dale, Butler, Robert, Carnes, Bruce A., Clark, Brian F. C., Cristofalo, Vincent, Faulkner, John, Guarente, Leonard, Harrison, David E., Kirkwood, Tom, Lithgow, Gordon, Martin, George, Masoro, Ed, Melov, Simon, Miller, Richard A., Olshansky, S. Jay, Partridge, Linda, Pereira‐Smith, Olivia, Perls, Tom, Richardson, Arlan, Smith, James, von Zglinicki, Thomas, Wang, Eugenia, Wei, Jeanne Y., Williams, T. Franklin·2005·The EMBO Reports
DOI 10.1038/sj.embor.7400555
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Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This viewpoint by mainstream biogerontologists argues that de Grey’s SENS agenda is a collection of exceptionally optimistic, untested proposals and not a credible framework for ageing research. The authors affirm support for basic ageing research while dissociating from claims that ageing can be engineered to stop or reverse within our lifetime.

Key findings

  • The authors state that each specific SENS proposal is “exceptionally optimistic” at the present stage of ignorance, and that none of the cited approaches has ever been shown to extend the lifespan of any organism, let alone humans.
  • They argue that multiplying the probabilities of success makes the claim that all SENS proposals can be accomplished “nonsensical,” and that the idea SENS will retard and reverse ageing within our lifetime “commands no respect at all within the informed scientific community.”
  • They agree that basic research on ageing deserves more support, citing “unambiguous evidence” that ageing can be slowed sufficiently to increase longevity by 30 or 40% in mammals; extra decades of active disease-free lifespan is described as plausible but “by no means certain.”
  • They distinguish testable ideas and results from ill-defined speculation, recommend research based on fact and extrapolation from earlier successes and failures, and dissociate themselves from those impressed by de Grey’s ideas in their present state.

Methods

  • Design: a viewpoint/essay/commentary, not primary research; it reports no experimental data, sample, or systematic analysis.
  • It responds to de Grey (2005) and critiques the SENS agenda by discussing feasibility, prior evidence, and research-priority selection.
  • Main analysis is argumentative: it evaluates specific SENS interventions—such as telomerase deletion, IL-7-mediated thymopoiesis, senescence marker-tagged toxins, and genetically engineered muscle—against known evidence and likelihood of success.

Limitations

  • Stated: the authors concede it is “foolhardy to try to ‘prove’ that a particular engineering problem can never be solved,” so they cannot rule out future success.
  • Stated/evident: no new data or systematic review are presented; it is an opinion/viewpoint, and the authors note that some signatories are moderately optimistic while others are less optimistic about therapeutic implications.
  • Evident: the critique focuses on de Grey’s proposals as of 2005 and does not experimentally test SENS; no formal limitations section is included.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1038/sj.embor.7400555

Cites

5 of 5 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

0 of 2 cited sources checked · 0 supported · 0 flagged

  • Interpretationreasoning
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    The claim that all SENS proposals can be accomplished seems nonsensical.

    “Therefore, by multiplying the probabilities of success, the claim that all of these proposals can be accomplished, although presented with confidence in de Grey's writings, seems nonsensical.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.
  • Interpretationreasoning
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    The idea that a research programme organized around the SENS agenda will retard and reverse ageing within our lifetime is so far from plausible that it commands no respect within the informed scientific community.

    “Consequently, the idea that a research programme organized around the SENS agenda will not only retard ageing, but also reverse it—creating young people from old ones—and do so within our lifetime, is so far from plausible that it commands no respect at all within the informed scientific community.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.
  • Probably not a substantial claim. 6

  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds.

    Interpretationreasoning
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    The SENS agenda is easily recognized as a pretence by those with scientific experience.

    “however, the SENS agenda is easily recognized as a pretence by those with scientific experience.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.

  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds.

    Interpretationreasoning
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    The items of the SENS programme are not yet sufficiently well formulated or justified to serve as a useful framework for scientific debate, let alone research.

    “In our opinion, however, the items of the SENS programme in which de Grey expresses such blithe confidence are not yet sufficiently well formulated or justified to serve as a useful framework for scientific debate, let alone research.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.

  • Probably not a substantial claim. The paper’s conclusions may not depend on it.

    Premisecitation
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    Dawkins points out that the scientific community has developed a better way to discriminate among competing ideas: testing them experimentally.

    “Dawkins points out that the scientific community has developed a better way to discriminate among competing ideas: testing them experimentally (Dawkins, 2003).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Dawkins, 2003

  • Probably not a substantial claim.

    Interpretationnone given
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    None of the authors believes that plans to engineer the body to prevent ageing indefinitely or to turn old people young again have the remotest chance of success.

    “None of us, however, believes that plans to 'engineer' the body to prevent ageing indefinitely or to turn old people young again have the remotest chance of success.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.

  • Probably not a substantial claim. It may be too vague to check against evidence. The paper may give no reason why it holds.

    Interpretationnone given
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    Each specific proposal in the SENS agenda is exceptionally optimistic at our present stage of ignorance.

    “Each one of the specific proposals that comprise the SENS agenda is, at our present stage of ignorance, exceptionally optimistic.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.
    • Rests on an assumption: The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.
    • Rests on an assumption: Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.

  • Probably not a substantial claim. The paper’s conclusions may not depend on it.

    Premisecitation
    § Science fact and the SENS agenda What can we reasonably expect from ageing research?

    Dawkins argues that engaging in public debates with creationists might be a bad idea because it creates the misleading impression that biologists consider creationist arguments meritorious.

    “Dawkins argues that engaging in such jousting contests might be a bad idea, in that such spectacles create, in the arena of public opinion, the misleading impression that biologists consider the 'arguments' of creationists sufficiently meritorious to require public discussion (Dawkins, 2003).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Dawkins, 2003
6 of 6

  • The paper relies on this without support.

    None of the SENS approaches (senescence marker-tagged toxins, total telomerase deletion plus cell therapy, IL-7 mediated thymopoiesis, allotopic mitochondrial-coded proteins, stem cell therapy and growth factors, genetically engineered muscle, phenacyldimethylthiazolium chloride) has ever been shown to extend the lifespan of any organism, let alone humans.

    “Yet, in his writings, de Grey fails to mention that none of these approaches has ever been shown to extend the lifespan of any organism, let alone humans.”

  • The paper relies on this without support.

    The few tests of the idea that IL-7 can improve protective immunity have produced disappointing results so far.

    “Those among us who are immunologists recognize that the few tests of the idea that interleukin 7 (IL-7) can improve protective immunity have produced disappointing results so far.”

  • The paper relies on this without support.

    Ablation of telomerase activity has not yet been shown to prevent or treat cancer either in humans or in animal models.

    “has not yet been shown to prevent or treat cancer either in humans or in animal models.”

  • The paper relies on this without support.

    Ageing can be slowed sufficiently to increase longevity by 30 or 40% in mammals.

    “We are all familiar with the unambiguous evidence from numerous laboratories showing that ageing can be slowed sufficiently to increase longevity by 30 or 40% in mammals.”

  • The paper relies on this without support.

    Treating arguments and proposals that are not backed up by scientific evidence as though they were scientific ideas carries the risk of making them impressive to laypersons.

    “Treating arguments and proposals that are not backed up by scientific evidence as though they were scientific ideas carries the risk of making them impressive to laypersons, whose main way of distinguishing among hypotheses is to take note of those that are promoted in public media or presented to them by advocates whose style they like.”

  • The paper relies on this without support.

    Science tends to award more points for testable ideas than for ill-defined speculations, and more points for results than for ideas alone.

    “There are good reasons why science tends to award more points for testable ideas than for ill-defined speculations, and more points for results than for ideas alone.”
6 of 6

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Metadata

Authors
Warner, H., Anderson, J., Austad, S., Bergamini, E., Bredesen, D., Butler, R., Carnes, B. A., Clark, B. F. C., Cristofalo, V., Faulkner, J., Guarente, L., Harrison, D. E., Kirkwood, T., Lithgow, G., Martin, G., Masoro, E., Melov, S., Miller, R. A., Olshansky, S. J., Partridge, L., Pereira‐Smith, O., Perls, T., Richardson, A., Smith, J., von Zglinicki, T., Wang, E., Wei, J. Y., & Williams, T. F.
Affiliations
  • University of Minnesota (US)
  • Buck Institute for Research on Aging (US)
  • The University of Texas at San Antonio Health Science Center (US)
  • University of Pisa (IT)
  • International Longevity Centre (US)
  • University of Oklahoma Health Sciences Center (US)
  • Aarhus University (DK)
  • Lankenau Institute for Medical Research (US)
  • University of Michigan (US)
  • Massachusetts Institute of Technology (US)
  • Jackson Laboratory (US)
  • University of Washington (US)
  • University of Illinois Chicago (US)
  • University College London (GB)
  • Boston University (US)
  • Newcastle University (GB)
  • University of Louisville (US)
  • University of Arkansas for Medical Sciences (US)
  • University of Rochester (US)
Corresponding author
Warner, Huber
ORCID
Venue
The EMBO Reports
Publisher
Springer Science and Business Media LLC
Published
2005-11-01
Volume
6
Issue
11
Pages
1006-1008
ISSN
  • 1469-221X (ISSN-L)
  • 1469-3178
DOI
10.1038/sj.embor.7400555
OpenAlex
W2062347110
Semantic Scholar
ed811c5e4926b89f5a3334e5634b0810b1c0e250
Cited by
74
References
4
Citations by year
2026: 2 · 2025: 1 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 1 · 2017: 3 · 2016: 5 · 2015: 1 · 2014: 5 · 2013: 5 · 2012: 5
FWCI
2.21
Type
journal article
Language
en
Open access
Licence
Locations
  • EMBO Reports (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed (publishedVersion)
  • Deep Blue (University of Michigan) (submittedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • The Mouseion at the JAXlibrary (Jackson Laboratory) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
Biotechnology and Biological Sciences Research Council (SF19106)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Social Sciences › Psychology › Developmental and Educational Psychology › Aging and Gerontology Research
Keywords
aging research, special educational needs, senolytics, rejuvenation, research agenda
MeSH terms
Aging, Genetic Engineering, Geriatrics, Health Policy, Humans, Longevity, Research, Science

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