Longevity supplements, fact-checked
The longevity supplement aisle runs on a quiet trick: a compound is shown to move a biomarker in a dish or a mouse, and that gets sold as proof it will help you live longer. We have checked the most-hyped ones, NMN and NR, resveratrol, berberine, spermidine, urolithin A, taurine, ashwagandha and more, against what the human evidence actually shows. The recurring verdict is Mixed or Unproven: the mechanism is often real, but the human outcome data are thin, short, and frequently funded by whoever sells the pill.
That does not mean none of it works. A few have genuine support for specific uses, omega-3s, vitamin D where you are deficient, creatine for muscle, and unproven is not disproven: several promising compounds simply have not been tested in the trials that would settle it, partly because unpatentable molecules attract little funding. This guide separates the compounds with real evidence from the ones riding a good story, and every linked check names who paid for the studies.
People also ask
- Do any longevity supplements actually work?
- A few have real evidence for specific uses: omega-3s, vitamin D for deficiency, creatine for muscle. Most others raise a biomarker without a proven human outcome, so the honest grade for the category is mixed, not uniformly good or bad.
- Why are most supplement verdicts unproven rather than disproven?
- Because the decisive long human trials often do not exist. Unpatentable compounds attract little research funding and aging trials take years, so unproven usually means untested at the level that matters, not shown to fail.
Caveat is journalism, not medical advice. We check public claims against published evidence; we don’t diagnose, treat, or tell you what to take.