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Space traveler's eyesight can become blurry after too much time in space. [ 86 ] [ 87 ] Another effect is known as cosmic ray visual phenomena . [a] NASA survey of 300 male and female astronauts, about 23 percent of short-flight and 49 percent of long-flight astronauts said they had experienced problems with both near and distance vision during ...
Since the risk of cardiovascular disease increases as people age, research on these diseases has become more important for space agencies - especially for long-term space missions. Other medical emergencies that have been observed in space include cases of urological [ 6 ] [ 7 ] and dental emergencies, [ 8 ] [ 9 ] as well as behavioural and ...
Sleeping in space is part of space medicine and mission planning, with impacts on the health, capabilities and morale of astronauts. Human spaceflight often requires astronaut crews to endure long periods without rest. Studies have shown that lack of sleep can cause fatigue that leads to errors while performing critical tasks.
They also provided the most in-depth data on record regarding the effects of space travel on the human body. New research based on this data details changes in the brain, heart, muscles, kidneys ...
The study involved 24 astronauts from the U.S., European and Japanese space agencies who traveled aboard the International Space Station for up to 26 weeks. Study documents headaches experienced ...
Space can be an unfriendly place for the human body, with microgravity conditions and other factors tampering with our physiology, from head to toe - head, of course, being a primary concern.
[80] [81] In the first 28 U.S. Space Shuttle flights (2–11 d duration), serum insulin levels (n = 129) were elevated by 55% on landing day compared to before flight. [82] Russian space life science investigators reported two-fold or greater increases in insulin levels in three cosmonauts within 1 day after they returned from a 237-d flight. [83]
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