Envy space travel?Skeletal aging may be ten years early

Text ｜ Xu Rui

Will humans fly to Mars one day? For decades, people have been discussing this task, but whether this task can be achieved depends not only on technology. "If human beings stay in space for 3 years at one time, we still need to pay attention to related health risks." Dr. Anna-Maria Liphardt, the University of Ellangen, Germany, said, "This is also applicable to perform tasks in space in space Astronauts who do not exceed 6 months. "

The astronauts "floating around" in space look enviable, but in fact, in some cases, for a long time, it will cause irreversible damage to the human bone structure in space for a long time. In the past 10 years.

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Recently, LIPHARDT jointly published the above results with researchers in Canada and the United States in the Scientific Report, and pointed out that the adaptive training program combined with drugs can provide better protection for astronauts who perform space mission in the future. These findings will also be used for treatment of rheumatism in clinical practice.

Liphardt is a sports scientist. In a long -term study, she has studied the changes in bone structure in space and how to restore it on the earth with German, Canadian, and the United States.

They performed a physical examination before entering space and 6 months and 12 months after returning to space. Biomarkers in blood and urine measuring bone conversion rates (the process of cell decomposition and new cell formation).

The research results are worrying. They found that even after 12 months of the space mission, nine of the 17 astronauts still did not fully recover, and their bone strength and bone density dropped by 2%.

"The decline sounds not much, but this is equivalent to at least 10 years of bone loss." Liphardt said, "This means that these astronauts will suffer from osteoporosis earlier and more easily fractures."

Compared with bone injury caused by human aging on the planet, the internal structure of the astronauts has a larger influence than the surface of the surface. Among some astronauts who were checked, their bone beams were damaged.

"Our research proves that the longer the astronaut stays in space, the more difficult its bone regeneration is." Liphardt said that the problem of astronauts with a higher bone conversion rate before space flight in space is more serious because the activity is because activities Higher -level human bone conversion rate is high, and it is a challenge to maintain the level of activity in space mission.

To this end, it is important to allow astronauts to conduct adaptive training with drugs.

"Although the international space station has various equipment, such as treadmills, fitness bicycles, and related weight training programs, it is still difficult to maintain the level of active activity of astronauts. New sports equipment that develops smoothly under zero gravity conditions and does not take up too much space It is particularly challenging. "Liphardt said that astronauts perform exercise plans during space flight. In addition, they can be used with dilute acid saline that has been successfully used to treat and prevent osteoporosis, which may benefit from it.

Related thesis information:

https://doi.org/10.1038/s41598-022-13461-1

"China Science News" (2022-08-03 The second edition of the original title "Space Travel: Fast Bone Old Age"))

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