https://www.live-feeds.com/feed/jonathan-the-giant-tortoise-194-offers-up-insight-into-secrets-of-longevityContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/jonathan-the-giant-tortoise-194-offers-up-insight-into-secrets-of-longevityhttps://www.live-feeds.com/feed/jonathan-the-giant-tortoise-194-offers-up-insight-into-secrets-of-longevity#u121555Wed, 14 Oct 2026 10:56:46 +0000Scientists have sequenced the genome and epigenome of Jonathan, a 194-year-old giant tortoise living on the remote South Atlantic island of St. Helena. Recognized as the world's oldest living land animal, Jonathan has survived for nearly two centuries by aging more slowly than expected. Researchers analyzed his DNA alongside four other Aldabra giant tortoises and discovered unique gene variants and stable gene switches. These genetic mechanisms help protect the functioning of mitochondria and cell energy production from entropy, potentially offering clues to extending the human healthspan