Astronauts' blood shows signs of DNA mutations due to spaceflight

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Short-duration space shuttle missions may have put its astronauts at a higher risk for cancer, a new study concludes. Astronaut cancer risk needs careful monitoring, concludes a study that stored spaceflyer blood for 20 years. All fourteen astronauts in the study, from NASA's space shuttle program, had DNA mutations in blood-forming stem cells, a Nature Communications Biology study (opens in new...

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