13 Jul Challenges of healthcare in zero gravity
Dr Grant began by explaining that, in space travel, micro-gravity is the largest factor effecting human health, particularly if people plan on coming back to earth. Note that there is gravity in space – it’s just coming, in varying amounts, from every single large mass, none of which are close enough to stick you to the floor the way earth does. When in orbit, you’re actually in free-fall, which isn’t really much better. Human bodies experience a fluid shift, with blood pooling in the head. The blood pressure set point also changes, causing problems when they come back home. Even after as little as two weeks in space, astronauts struggle to stand up for ten minutes at a time.