Space can be an unsuitable place for the human body; with conditions of 'microgravity' or weightlessness and other factors that can affect our physiology from head to toe - of course, the head is the main concern. The absence of Earth's gravity changes the brain. According to a report by Reuters, a new study funded by NASA provides a better and deeper understanding of this consequence. Researchers said on Thursday that astronauts who spent at least six months on the International Space Station or NASA space shuttles experienced significant expansion of their brain ventricles. The ventricular system is a set of four interconnected structures in the center of the brain filled with cerebrospinal fluid. This colorless and watery fluid flows inside and around the brain and spinal cord, acting as a shock absorber to protect the brain from sudden impacts and also removes waste. Based on brain scans of 30 astronauts, researchers found that it takes three years for the brain ventricles to fully recover after such journeys, leading to the recommendation that the interval between space missions should be increased. Heather McGregor, a neurologist at the University of Florida and the lead author of the study, told Reuters, "If the ventricles do not have enough time to repair between consecutive missions, it may affect the brain's ability to cope with fluid shifts in microgravity conditions. For example, if the ventricles have already enlarged from a previous mission, they may have less adaptability, or less space to expand and shift cerebrospinal fluid during the next mission." Age-related enlargement of brain ventricles, which is due to brain atrophy and not exposure to microgravity, is known to be associated with cognitive decline. Rachel Seidler, a professor of applied physiology and kinesiology at the University of Florida and a senior author of the study, said, "The impact of ventricular expansion in space travelers is currently unclear. More long-term health tracking is needed. This type of ventricular expansion further compresses the surrounding brain tissue." The study indicates that the enlargement of brain ventricles occurred in the first six months of space missions but did not worsen after six months. Additionally, this change was not observed in the brains of individuals who had short trips to space. The results of this research were published on Thursday in the scientific journal 'Scientific Reports.'
Scientists Document the Effects of Space Travel on the Human Brain
A new NASA-funded study reveals that astronauts on missions of at least six months experience significant expansion of their brain ventricles due to microgravity. This expansion can affect the brain's ability to manage fluid shifts, suggesting longer recovery times between missions are necessary. Understanding these effects is crucial for future long-duration space travel.
👥 Key Players
📰 What Happened
A new study funded by NASA reveals that astronauts on missions lasting at least six months experience significant expansion of their brain ventricles due to microgravity. This enlargement can hinder the brain's ability to manage fluid shifts, suggesting that longer recovery times between missions are necessary.
- Astronauts' brain ventricles expand significantly during long missions.
- Recovery from this expansion takes about three years.
💡 Why It Matters
📚 Background
Microgravity affects human physiology in various ways, and understanding these effects is essential for the safety of astronauts on long missions. This research builds on previous studies of space travel's impact on the body.
🏷️ Entities Mentioned
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