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Jonathan's secret: the world's oldest tortoise has the energy metabolism of a teenager
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Jonathan's secret: the world's oldest tortoise has the energy metabolism of a teenager

So, Jonathan the giant tortoise is at least 194 years old, and a new study may offer a clue to his extraordinary longevity. Researchers found that 277 of his genes retain epigenetic patterns resembling those of very young tortoises. Many of these genes help mitochondria produce energy, suggesting Jonathan’s cells may keep this vital system working remarkably well with age. The finding could offer insights into human ageing too, while Jonathan himself is still basking in the sun and enjoying ripe pears.
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