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We have identified a serious new health risk for manned spaceflight



We still find out what the possible effects of prolonged space stays on the human body may be. Now a new health threat has been identified that could jeopardize life on long journeys through the cosmos.

The problem lies in the internal jugular vein (IJV), a large blood vessel that runs down the brain from the neck. A study of 11 astronauts who spent time on the International Space Station (ISS) found that six of them had stagnant or backward blood flow in that particular vein within just 50 days.

have developed a thrombosis or blockage in the internal jugular vein, which was recorded for the first time as a result of a spaceflight.

According to the team that stands behind the new findings, this issue needs to be investigated before we begin to send astronauts long trips to Mars. It is not yet clear what the consequences of this type of thrombosis could be, but the consequences could be severe and possibly even fatal. The upright posture on earth with unknown consequences for the outflow of the cerebral veins, "the researchers write in their published article. 1

9659003] Here on Earth, of course, gravity takes over the task of pulling blood from your head into the rest of the earth – that's one of the reasons why you would feel very strange if you stood on your hands for a long time.

In the microgravity environment of the ISS, this is a different story – and blood flow problems are not the only health risks we need to worry about in volume, increased stroke volume, and reduced plasma volume, "the researchers write anticoagulants for the remainder of the mission (the identity of the astronauts is withheld for privacy reasons ).

More research is needed to find out how big this problem actually is and how we could mitigate it in the future space flights; Worryingly, however, is the high number of astronauts who developed a type of circulatory disorder.

We already know that spatial retention may decrease bone density, alter the composition of our intestinal bacteria, and squeeze our brains. At least we're working to discover these effects before we try to push farther than to the moon, so we have better chances of finding possible solutions.

and future exploration class missions, such as a mission to Mars, "conclude the researchers.

The research was published in JAMA Network Open [194559006].


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