How can you prevent osteoporosis in space?

Answer 1

People that go to space typically do weight-bearing exercises such as working out with resistance bands, as well as running on a treadmill while strapped down to it in order to prevent osteoporosis. Since there is no gravity while orbiting the earth, muscles and bones do not have the stress that we are all subject to on earth, so exercising becomes critical while in space, especially when spending an extended amount of time in space.

Answer 2

Because gravity decreases stress on the bones and makes bone growth inactive. Astronauts loses bone density and gets carried out of spaceship after they land