Could this mysterious disappearing organ hold the key to longevity?0

• SCIENCE, Science / Health, Science Mission Directorate, scientists, Space, Space Communications & Navigation Program, Space Launch System (SLS), Space Telescope, space-x-ipo, SpaceX
• July 14, 2026

In 1996, cryobiologist Gregory Fahy walked into his doctor’s office and got a monthly supply of growth hormone. Your hope, reinforced by a single study in rats1was that the injections would help him grow his thymus, a peculiar immune organ that atrophies and virtually disappears as people age. Regenerating it, Fahy thought, would help it