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COMPANIESCompanies rated · 435 (no change)PROJECTSProjects rated · 70 (no change)CATALOGUE874 grants in catalogue · 19 open right nowPOWERED BYOpen Longevity · 501(c)(3) · Sherman Oaks, CACOMPANIESCompanies rated · 435 (no change)PROJECTSProjects rated · 70 (no change)CATALOGUE874 grants in catalogue · 19 open right nowPOWERED BYOpen Longevity · 501(c)(3) · Sherman Oaks, CA

Steve Horvath

Horvath made aging measurable enough for others to argue with it. His epigenetic clocks became a test bed for longevity claims, including studies that find no rejuvenation when the hype fails.

57 / 100scientistpopulariserphilanthropistScoring AI engine · v0.4.0
Role
scientisthigh confidence

The evidence shows Horvath as an author on peer-reviewed aging-clock papers, and those papers are exactly how he moved longevity forward: by creating and validating epigenetic aging biomarkers. Delete the papers and most of his longevity impact disappears.

Steve Horvath — OpenAlex citation metricsHuman clinical trial of plasmapheresis effects on biomarkersEpigenetic Age Monitoring in Professional Soccer Players for

also: populariser, philanthropist, investor

Dimension breakdown

This score rates longevity commitment only. The role tags above — scientist, investor, and the rest — say what this person is; we don't score those separately.

Future vision

5.0/ 10

The evidence supports that Horvath has a durable research vision centered on epigenetic clocks as biomarkers for measuring, validating, and guiding interventions that may extend healthspan and modulate biological aging. It also shows public alignment with immune/thymus rejuvenation as a possible aging-intervention pathway. However, the provided evidence does not show a broad, concrete, personally articulated end-state for ending aging or materially extending human lifespan, nor a detailed timeline or deployment roadmap. This is credible but more tool-and-pathway focused than field-defining future vision.

medium confidence

Scientific impact

10.0/ 10

Citation-weighted evidence is field-defining: OpenAlex reports an h-index of 151, nearly 140,000 total citations, and multiple foundational, heavily cited works including WGCNA and the multi-tissue DNA methylation age clock. The evidence supports major direct scientific influence on computational biology, epigenetic aging biomarkers, and the technical agenda of longevity research.

high confidence

Capital deployed

1.0/ 10

The dimension is applicable because Horvath has some institution-building signal through a reported role as co-founder and scientific advisory board chair of an epigenetic clock foundation, but the provided evidence contains no disclosed personal capital deployment, investments, donations, fund allocation, or quantified philanthropic support directed toward longevity. His scientific impact is strong, but that does not substantiate capital_deployed.

medium confidence

Strategic taste

7.0/ 10

Horvath shows strong strategic taste around making aging measurable: the evidence supports a coherent, counterfactually important focus on epigenetic clocks and biomarker infrastructure, including development of the foundational Horvath clock and later foundation-building around epigenetic clock development. However, the record provided lacks direct evidence of an explicit strategy thesis, risk appetite, early contrarian reasoning, investment/deployment choices, or broader bet pattern beyond aging measurement.

medium confidence

Field creation

7.0/ 10

Steve Horvath appears to have materially created a new, legible longevity measurement category through the Horvath epigenetic clock, with independent academic evidence showing later researchers using 'Horvath's Clock' as a known biological-age test and applying CpG sites published by him. He also co-founded an Epigenetic Clock Development Foundation, but the evidence for organizational field-building is thin and partly uncorroborated. The strongest field_creation signal is category/protocol creation around epigenetic clocks rather than active institution-building or funding-path creation.

medium confidence

Bravery and conviction

2.0/ 10

The dimension applies because Horvath is a public longevity/aging scientist, but the provided evidence contains almost no direct evidence of public risk-taking, personal downside, contrarian advocacy, sustained criticism, or self-experimentation. His epigenetic clock work is highly influential, but scientific impact alone is not bravery/conviction under this rubric.

low confidence

Multiplier effect

8.0/ 10

Horvath shows strong second-order leverage through field-spanning scientific uptake of epigenetic clocks and related methods: very high citation metrics, multiple foundational works with thousands of citations, a dedicated Epigenetic Clock Development Foundation, and recent follow-on applications across clinical biomarkers, sports performance, plasmapheresis trials, Alzheimer's biomarkers, and non-human species aging. Evidence supports major collaborator and follow-on-project leverage, though not broad capital, policy, founder, or public-legitimacy leverage.

medium confidence
Vision

Destination

Towards global healthy longevity: report from the 1st World Longevity Summit in Kyotango, Japan.

[S1] Medium 2025

we were of course, hoping that this could become a valuable readout of biologic age, but it took, of course, many years to realize that potential.

[S2] High 2024

a second generation clock truly aims to predict mortality or morbidity risk.

[S3] High 2024

In 2023, Steve Horvath and his team at the University of California, Los Angeles published the universal pan-mammalian epigenetic clocks capable of estimating age across all mammalian species.

[S4] High 2023

So ultimately I do believe that we can rejuvenate most cell types and tissues.

[S5] High

So I collected this very large dataset over seven years, and one of the reasons was to understand the mystery of maximum lifespan.

[S6] High

I'm moving away from biomarker development towards finding interventions that move the needle and ideally rejuvenate multiple organs and cell types at the same time.

[S7] High

Path

No canonical quotes yet.

Publicly endorses DNA methylation clocks capture biological aging statePublicly endorses Epigenetic age can be reversed by immune rejuvenationPublicly endorses Growth-hormone-based thymic regenerationPublicly endorses Thymus regeneration reverses immunosenescence
Strategy

No direct strategy evidence was available, so Steve Horvath's broader investment, donation, stage, geography, risk, and time-horizon preferences are unknown. The only supported strategic signal is his co-founder role at the Epigenetic Clock Development Foundation, which points to a focus on epigenetic clock development and aging biomarker infrastructure [S1]. There is no evidence here of investments, donations, co-investors, mentees, mentors, or scientific collaborators tied to a strategy profile [S1]. Any more specific thesis beyond aging measurement would be unsupported by the provided evidence.

UnknownUnknownEpigenetic ClocksBiomarker DevelopmentAging Measurement

Notable bets

Epigenetic Clock Development FoundationCo-founding a foundation around epigenetic clock development indicates a focus on advancing aging-measurement infrastructure.
Portfolio

Donations

Organizations founded

Epigenetic Clock Development FoundationFoundation · Co Founder
Epigenetic Clock Development FoundationFoundation · Co Founder
Epigenetic Clock Development FoundationFoundation · Co Founder
Scientific output
h-index151
Citations-
Papers26
Trials0
Bravery and conviction
Belief evolution
His team pioneered third generation epigenetic clocks that apply to multiple species at the same time including universal pan-mammalian epigenetic clocks capable of estimating age in all mammalian species based on cytosines in highly conserved stretches of DNA [ 19 ]Longevity path thesis · 2026 · His team pioneered third generation epigenetic clocks that apply to multiple species at the same time including universal pan-mammalian epigenetic clocks capable of estimating age in all mammalian species based on cytosines in highly conserved stretches of DNA [ 19 ]
His team pioneered third generation epigenetic clocks that apply to multiple species at the same time including universal pan-mammalian epigenetic clocks capable of estimating age in all mammalian species based on cytosines in highly conserved stretches of DNALongevity path thesis · 2026 · His team pioneered third generation epigenetic clocks that apply to multiple species at the same time including universal pan-mammalian epigenetic clocks capable of estimating age in all mammalian species based on cytosines in highly conserved stretches of DNA
Steve Horvath is a German-American geneticist, biostatistician, and aging researcher best known for developing the multi-tissue 'Horvath clock,' a foundational epigenetic biomarker of biological age.Longevity path thesis · 2026 · Steve Horvath is a German-American geneticist, biostatistician, and aging researcher best known for developing the multi-tissue 'Horvath clock,' a foundational epigenetic biomarker of biological age.
Self-experimentation
Gilgamesh contractOther · Concluded · Teenage pact with his twin brother and a friend to divide up scientific work aimed at rejuvenation and extending longevity.
Gilgamesh contractOther · Concluded · A named pact Steve Horvath made as a teenager to divide up scientific work aimed at rejuvenation and extending lifespan.
Connections

Companies

Intervene ImmuneEmployee · Steve Horvath, PhD Scientific Collaborator UCLA Professor. Creator of the epigenetic clock.
My Aging TestsCo Founder · Dr. Steve Horvath Co-Founder and a Primary Developer of Epigenetic Aging Clocks, Professor in Human Genetics and Biostatistics at UCLA

Collaborators and lineage

No public rows yet.

Criticisms