The impossible claim

This wrinkled rodent lives 30+ years — nine times longer than a mouse — and its risk of dying doesn’t rise with age at all.

The verified facts

The naked mole rat (Heterocephalus glaber) is a nearly hairless, cold-blooded burrowing rodent from East Africa — and the longest-lived rodent known. Where a similar-sized mouse survives about 4 years, naked mole rats routinely live over 28 years (some past 30), and the oldest recorded reached 41 years.

  • The Gompertz law says mortality risk should rise exponentially with age. In naked mole rats it doesn’t rise at all — their death risk stays flat across their whole lifespan (Buffenstein et al., eLife 2022)
  • Cancer resistance: very low spontaneous cancer rates; they produce high-molecular-mass hyaluronan that seems to stop cells from crowding into tumors (Tian et al., Nature 2013)
  • They tolerate oxygen down to ~5% for hours and survive 18 minutes without any oxygen by switching to fructose metabolism — like a plant
  • Queen status is real: colonies are eusocial, the queen suppresses rivals’ fertility, and breeding females live 17+ years with no drop in fertility

Watch

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Sources

  • Buffenstein, R. et al. (2022). The naked mole-rat exhibits no increase in mortality hazard as it ages. eLife.
  • Tian, X. et al. (2013). High-molecular-mass hyaluronan mediates the cancer resistance of the naked mole rat. Nature.
  • Ruby, J. G., Smith, M. & Buffenstein, R. (2018). Naked mole-rat mortality rates defy Gompertzian laws by not increasing with age. eLife.
  • Edrey, Y. H. et al. (2011). Successful aging and sustained good health in the naked mole rat. Experimental Gerontology.

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