We all have heard about both space travel and Alzheimer’s. Space travel is constantly in our news, new things discovered, planed mission to mars, and the all time debate about landing on the moon. Alzheimer’s is one of those diseases that can’t be cured, and is pretty much torture for anyone who has to go through it or watch someone they love go through it. Well now it seems that Space travel may accelerate Alzheimer’s.
The NASA-funded study involved bombarding mice with varied radiation doses, including levels comparable with what voyagers would experience during a mission to Mars, and seeing how the animals managed to recall objects or locations.
Mice exposed to radiation were far more likely to fail those tasks, suggesting neurological impairment earlier than such symptoms typically appear.
“Galactic cosmic radiation poses a significant threat to future astronauts,” said Michael O’Banion, a professor at the University of Rochester Medical Centre and senior author of the study published in scientific journal Plos One.
“This study shows for the first time that exposure to radiation levels equivalent to a mission to Mars could produce cognitive problems and speed up changes in the brain that are associated with Alzheimer’s disease.”
NASA is planning manned missions to a distant asteroid in 2021 and to Mars in 2035. A round trip to Mars could take as long as three years.
While space is filled with radiation, Earth’s magnetic field generally protects the planet and people in a low earth orbit from such particles. But once astronauts leave orbit they are exposed to a shower or various radiation.
NASA has funded alot of studies to see exactly what the damage of space travel holds for the astronauts. These have resulted in showing the potential cancer, cardiovascular and musculoskeletal impact of galactic cosmic radiation. The University of Rochester study was more interested in the damage radiation has on neurodegeneration, and most importantly the biological processes in the brain that contribute to the development of Alzheimer’s.
The brains of the mice also showed signs of vascular alterations and a greater than normal accumulation of beta amyloid, the protein “plaque” that accumulates in the brain and is one of the hallmarks of the disease.
“These findings clearly suggest that exposure to radiation in space has the potential to accelerate the development of Alzheimer’s disease,” O’Banion said.
“This is yet another factor that NASA, which is clearly concerned about the health risks to its astronauts, will need to take into account as it plans future missions.”
Even after all these studies I’m pretty sure there will be heaps of astronauts apply for that once in a life time experience by going to Mar’s. But now I hope they do way up the costs of these choices.
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