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Study Reveals Space Travel Accelerates Aging in Astronauts

9/13/2025

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Summary

Story summary

A study shows that space travel accelerates aging in human cells, decreasing cell production and increasing DNA damage.
UC San Diego researchers found that microgravity raises inflammatory protein levels and shortens telomeres in blood stem cells.
Some cells activated dormant 'junk DNA,' which negatively affected immune function.
Damage observed post-return to Earth was partially reversible, indicating possible recovery strategies for astronauts.
The study highlights the need for more research on epigenetic changes affecting astronaut health and aging on Earth.

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Story summary

A study shows that space travel accelerates aging in human cells, decreasing cell production and increasing DNA damage.
UC San Diego researchers found that microgravity raises inflammatory protein levels and shortens telomeres in blood stem cells.
Some cells activated dormant 'junk DNA,' which negatively affected immune function.
Damage observed post-return to Earth was partially reversible, indicating possible recovery strategies for astronauts.
The study highlights the need for more research on epigenetic changes affecting astronaut health and aging on Earth.