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Jonathan, the 194-year-old tortoise.

1 report so far. New developments are added to this thread as they happen.

  1. Oct 7, 2026
    ENERGY GENES SHOW FEWER CHEMICAL SIGNS OF AGINGAnimal study · 1 old tortoise

    Energy genes in a 194-year-old tortoise show fewer signs of aging

    A study of Jonathan, the giant tortoise on St. Helena, found that the switches controlling his cells' energy genes still look like those of young tortoises.