Tortoises: The Original Longevity Experts

Tortoise Lifespan Records

Galápagos giant tortoise

Chelonoidis niger

Typical lifespan: 100–150 years

Record: ~170 years

Aldabra giant tortoise

Aldabrachelys gigantea

Typical lifespan: 100–150 years

Record: ~189 years (unverified)

Radiated tortoise

Astrochelys radiata

Typical lifespan: 50–100 years

Record: ~70 years

Hermann's tortoise

Testudo hermanni

Typical lifespan: 50–80 years

Record: ~90 years

Greek tortoise

Testudo graeca

Typical lifespan: 50–100 years

Record: ~100+ years

Desert tortoise

Gopherus agassizii

Typical lifespan: 50–80 years

Record: ~80 years

Why Do Tortoises Live So Long?

Tortoises are textbook examples of negligible senescence — their chance of dying does not rise sharply with age the way it does in most mammals. Biologists attribute this to several overlapping traits:

• Slow metabolism: Lower energy turnover means less oxidative damage over decades.
• Efficient DNA repair: Their cells maintain genomic stability for much longer than similarly sized mammals.
• Robust immune defences: They remain effective at fighting infections into extreme old age.
• Protective shell: Physical armour reduces injury, predation and chronic stress.
• Stable proteins: Tortoise cells show strong proteostasis, limiting the accumulation of damaged proteins.
• Large body size: Giant species have more cells and lower mass-specific metabolic rates.

These traits overlap with several of the 12 Hallmarks of Ageing, which is why tortoises make such a fitting mascot for longevity research.

Recommended Reading

Want to go deeper on tortoise biology, conservation and longevity? View recommended tortoise book on Amazon →

Learn More

Want to see how tortoises compare to whales, sharks and clams? Visit our dedicated Longest-Living Animals page, or read the full longest-living animals article in the research blog.