Scientists are still learning how spending prolonged periods of time in the microgravity of space can affect astronauts’ health. The environment has been shown to accelerate bone density loss and the destruction of blood cells, put pressure on the eyes that can cause vision problems, andcause many more health conditions — an especially pertinent topic as NASA is in the process of evacuating an astronaut from the International Space Station due to an unspecified health crisis.
The human brain, which is suspended in clear cerebrospinal fluid inside the skull, can also be impacted by the effects of microgravity — in a surprisingly tangible way. As detailed in a new study published by an international team of researchers in the journal PNAS, the brain “shifts upward and backward within the skull following spaceflight, with sensory and motor regions exhibiting the largest shifts.”
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