Key Takeaways

Research shows that spaceflight accelerates the aging of human blood stem cells

Researchers used automated systems on the International Space Station to track cell health in real time, and saw signs of aging within weeks

The findings have important implications for the health of astronauts and could help scientists better understand human aging on Earth

MONDAY, Sept. 8, 2025 (HealthDay News) — Space travel takes a significant toll on the human body, and a new study reveals that it can speed up the aging of crucial blood and immune cells.

Researchers from the University of California San Diego found that blood-forming stem cells showed signs of rapid aging after spending just over a month in space.

The study used automated artificial intelligence (AI)-driven imaging on f

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