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  • 3 months ago
Are astronauts aging faster in space? A groundbreaking new study from UC San Diego reveals that human stem cells — specifically the ones responsible for blood and immune system health — may age more rapidly during spaceflight aboard the International Space Station. The study observed DNA damage, reduced regenerative ability, and shortened telomeres, all signs of accelerated aging caused by microgravity and radiation.

But here’s the surprising twist — some of this aging may be reversible! When the cells were brought back to Earth and placed in a healthy environment, they started to recover.

This discovery doesn’t just change how we protect astronauts — it could also unlock secrets about human aging and diseases like cancer right here on Earth.

:microscope: Learn how space is shaping our understanding of health, aging, and the future of deep space missions.
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00:00Are astronauts aging faster in space?
00:02A new study says yes, and it's not just wrinkles we're talking about.
00:06Scientists just discovered that human stem cells age more rapidly in space.
00:11The focus? Hematopoietic stem and progenitor cells,
00:14the ones that help build your blood and immune system.
00:17After spending just over a month on the International Space Station,
00:21these cells started to show serious signs of aging.
00:24They got worse at making new cells,
00:26suffered more DNA damage,
00:28and even had their telomeres shrink.
00:31Those are like protective caps at the ends of DNA strands.
00:34Basically, their biological clocks sped up.
00:36The culprits? Likely radiation and microgravity.
00:40But here's the twist. Some of that damage might be reversible.
00:43When the aged cells were returned to a healthy environment on Earth,
00:47they started to recover.
00:48It's a hopeful sign, especially with future long-term missions
00:52to the Moon and Mars on the horizon.
00:54This research could help protect astronauts
00:56and even unlock new secrets about aging and disease
00:59right here on Earth.
01:01So yes, space might age your cells faster,
01:04but science might just find a way to hit rewind.
01:06So yes, space may or so continue to engage with the층 of the brain
01:09and the body might change theisco which we have.
01:11So yes, space may be smart.
01:13So yes, space may be with you.
01:15Now we can quickly move on to the next phase,
01:17of which we are going to walk with you.
01:18And now in the next phase of the brain,
01:19the test is important to improve your body.
01:21processes may be useful for the human being.
01:24So yes, space may be part of the primary meaning.
01:26So yes, space may be present.
01:28But they can health, space may be present.
01:30So yes, space may be present.
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