June 26, 2022

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Effects of space on the blood of astronauts

Traveling in space is not normal. Researchers remind us of this today. They were interested in the impact it would have on the blood of astronauts. Confirm the harsh reality of space anemia.

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[EN VIDÉO] The flow of red blood cells in real time
Photo-acoustic phloxygraphy technique allows the real-time observation of the movement of red blood cells in a capillary. The amount of oxygen present in each globule and in a capillary can be determined.

Trips are said to shape youth. Henceforth, let us add that travel (in space) destroys our red blood cells. At an impressive rate. According to some, this is even a primary attribute University of Ottawa researchers (Canada). They made a decision after six months of work over 14 years Astronauts In service on board International Space Station (ISS) and The The composition of their blood.

Remember that on Earth, our body produces and destroys less than 2 million red blood cells every second. By the time they spend in space, the bodies of men and women destroy 54% more red blood cells. This is more than 3 million per second. What should explain the syndromeSpace anemia Has been known for a long time.

A long-term phenomenon

Although they do not measure it, researchers imagine that astronauts also create more Red atoms Change than the earth. Otherwise, they can cause severe anemia and severe health problems. They also point out that red blood cell deficiency has little impact on the body as long as it exists Weightlessness. But the effects of anemia tend to catch astronauts at once Gravity From Earth – or from another planet – is felt again.

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This work also shows that red blood cell levels usually return to normal 3 or 4 months after returning to Earth. Even a year later, the astronauts are destroying more than they had before staying in space. 30% more, everything will be the same. One that suggests structural changes. And ask many questions – what is the impact on the diet of astronauts, and how long can the body stay at this rate, for example – at a glance Long trips to Mars Especially.

This work may also shed light on the case of these patients who develop anemia after prolonged bed rest. Without doctors understanding the mechanism. Space is a mechanism similar to the one that leads to anemia.

The future in the starsThis is an unavoidable event for astronomy and space enthusiasts. Discover us for a complete tour of the epimerides of the month, with advice to better observe what is happening in the sky on the 1st of each month. A special chapter, published on the 15th of each month, gives you the opportunity to learn more about a particular subject or event that represents astronomical and space news.

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