A new study has revealed that astronauts who spend lengthy lengths of time in space can experience negative health effects that can persist even after they return to Earth. The study, conducted by a team of researchers from the University of Florida, looked at the medical records of over 500 astronauts who spent more than two weeks in the ISS. What they found was that the longer an astronaut was in space, the more likely they were to experience physical and mental health issues, including changes in vision, hearing, immune system, and bone loss. This research is a stark reminder of the extreme toll that space travel can take on the body, and it is important to consider the long-term health effects of any space mission.

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source: Phys.org