Why do astronauts lose bone density?

They have been tracking 17 astronauts before and after spaceflight since 2015 to understand whether bones recover from the ‘long-term’ flight.

The researchers scanned the astronauts’ wrists and ankles before they left for space, when they returned to Earth, and then 6 and 12 months after their return.


“We found that weight-bearing bone was only partially recovered in most astronauts a year after spaceflight. This suggests that permanent bone loss from spaceflight is comparable to the loss of spaceflight. age-related bones on Earth in a decade,” lead author Dr. Leigh Gabel, Assistant Professor of Kinetics at varsity.

Preventing bone loss during space flight

“We’ve seen astronauts having trouble walking due to weakness and lack of balance after returning from spaceflight, to others happily cycling on the grounds of Johnson Space Center to meet us on a research tour. There were quite a few answers among the Astronauts when they returned to Earth,” adds Dr. Steven Boyd, director of the McCaig Institute for Osteopathic Health at varsity.

According to former University of Calgary President and Astronaut Dr. Robert Thirsk, “just as the body had to adapt to cosmic light at the start of the mission, it also had to return to Earth’s gravity field at the time of the mission. end”.

“Fatigue, dizziness and loss of balance were immediate challenges for me when I got back. Bones and muscles took the longest to recover from space flight. But within a day after the launch. landed, I felt comfortable again as an Earthling.”

As future space missions are exploring travel to more distant locations, the next iteration of the study will explore the impact of longer trips, to support one-day astronauts. someone could travel outside the International Space Station.

Source: IANS

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