Tim Lantin

Aging research is rate-limited by long iteration loops; it may take years or decades to know if an intervention has any effect. However, recent research provides evidence that astronauts “exhibit many hallmarks of aging…often on accelerated timelines”, which raises the interesting possibility of spaceflight-as-an-accelerated-aging model. Here, Claude and I investigate three questions: 1. To what extent do the effects of spaceflight resemble the aged human transcriptome? 2. Are these effects reproducible enough to be an accelerated aging model? 3. What existing drugs might reverse these effects? We reframed open human spaceflight blood transcriptomics as an accelerated model of immune aging. Using OPEN NASA OSDR data only, we found the conserved spaceflight signature most resembles human immune aging (inflammaging), replicating at the pathway level across three independent missions (Inspiration4, Ax-1, JAXA) — different platforms, biofluids, 3 to >120 days. The telomere axis doesn't transfer — reported straight. Reversing the signature against LINCS and cross-filtering against lifespan-extending geroprotectors yields a dual-evidence drug shortlist (taxifolin, everolimus, curcumin) — hypothesis-generating, not clinical advice. Astronauts age fast and recover on a known clock, making spaceflight data a testbed for geroprotectors — the actionable step existing work stops short of.

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