What problems can be caused by an astronauts bones getting thinner?

Answer 1

When an astronaut goes to space, the lack of gravity in the capsule or the space station will make his bones and joints very weak. A period of 2-hour exercise is required every day so that his bones will not shatter when he returns to Earth. Technically the astronauts' bones will not get thinner, but instead weaker. Problems like osteoporosis can be caused if the astronaut stays in space for extended periods of time.

Answer 2

Thinning of an astronaut's bones in space, known as space-induced osteoporosis, can lead to increased fracture risk upon returning to Earth due to reduced bone density and strength. This condition is primarily caused by the lack of gravity-induced stress on the bones, which leads to increased bone resorption and decreased bone formation. Astronauts may require rehabilitation and therapy to rebuild bone density and strength after prolonged space missions.