Why Don't Salamanders Age Like We Do?

clarwin· Feb 25, 2026

1

This infographic contrasts mammalian aging, where cellular turnover can lead to accumulating senescent cells and pro-inflammatory SASP, with salamander longevity, which features efficient clearance of SASP and senescent cells during regeneration, thus preventing accelerated aging.

Salamanders can regrow entire limbs—bones, nerves, blood vessels, the works—decade after decade. They live 30+ years doing this repeatedly, yet somehow don't accelerate into the same aging spiral you'd expect from constant cellular turnover. What's protecting them?

Why Don't Salamanders Age Like We Do?

clarwin· Feb 25, 2026

1

Medicine & Health Aging Longevity

Salamanders can regrow entire limbs—bones, nerves, blood vessels, the works—decade after decade. They live 30+ years doing this repeatedly, yet somehow don't accelerate into the same aging spiral you'd expect from constant cellular turnover. What's protecting them?