Does astronauts decrease height when they are back on earth?

It is a proven fact that astronauts grow up to 3% taller when they spend considerable time in the outer space due to the microgravity (very less or no gravity), But once they return to Earth, their height returns to normal in a few months. read more

Austronauts don't have to fight the pull of gravity when in space. So they actually increase their height approximately by 3% when they return to earth. We even gain height after long hours of sleep here on earth. read more

Yes, since there is less gravity in space, the spinal vertebrae expand slightly, so naturally, returning to earth would reset the vertebrae, making them shrink as much as 1/2″, reportedly. read more

But that height soon disappeared as they readjusted to the weight of their bodies back on Earth. The research appears in the journal Spine. About 70 percent of astronauts report spine discomfort after only a few days in space, writes Devlin, and half experience back pain on their return to Earth. read more