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Four at the International Space Station – clockwise from the bottom of the left, Nick The Hague, Sony Williams, Bush Wilmor and Don Bette – when they sent a message of Thanksgiving to Earth on November 26, 2024. | Credit: NASA
Space pioneers who live in reasonable isolated space for long periods of time can remain healthier by exposure to a larger group of microbes than Earth, according to a new study.
“The sterile environments are not actually the safest environments,” the study author Rob Knight, a professor at the University of California, San Diego, told Space.com. “Exposure to useful microbes in the environment is important to maintain health – this is not surprising because, as human beings, we have generated these environmental microbes for millions of years.”
Astronomers on the International Space Station (ISS) face unique pressure that affects their physical functions. These include exposure to small gravity and radiation that affect immunity responses; The human body with a healthy immune system needs to work more seriously in space to overcome the same infection that will be relatively easier to fight on Earth, according to Nassa research.
former studies Ownership Attributed ISS, such as the rash, cold sores, and some unconventional allergies, have been informed of changing immune systems. Time in mind, a new study produced by KNIGHT and its colleagues indicate that it is possible to strengthen the immune system of astronauts and public health – without prejudice to their hygiene – by introducing various societies of microbes of soil and water that coexisted with humans for thousands of years.
The team’s results are based on an analysis of the 803 surface samples that were wiped through the American part of ISS, which leads to the largest data set that shows the microbial and chemical scene of the habit. The results showed the presence of microbial societies that were largely specific to their environments; For example, microbes of food were prevalent in food eating and storage areas, while stool -associated microbes were more abundant in the waste and hygiene cabin, also known as space toilet.
The comparison of these samples with thousands of samples collected here on Earth showed everywhere for chemicals throughout ISS that come from cleaning and disinfectants, similar to the isolated industrial spaces on our planet such as hospitals and urban houses. In general, the survey reflects the loss of microbial diversity on the high -power ISS, which is a noticeable concern and represents the optimal level in supporting the functions of immune astronauts.
“We hope that the impact of this research will be to direct future studies that keep astronauts healthy during the extended space travel and in the colonial area,” Knight said.
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Before introducing new microbes into an ISS environment – such as those in the soil of the earth and water – scientists must assess whether the microbes that are usually harmful to human health may become harmful in space. These potential risks may arise from lower microbial diversity or increase the mutation rates caused by radiation, as Knight pointed out: “These factors can be tested on Earth before proceeding to costly space experiments.”
the Ticket Posted on Wednesday (February 27) in the magazine cell.
