How does weightlessness affect astronauts' health?

luckycatfay, artificial gravity will do the trick

I kind of knew the correct answer intuitively, but also remembered how in the movie "Gravity" [spoiler alert], Sandra Bullock could barely stand upon returning to Earth.

ILL STAY ON EARTH THANK YOU. IM NOT INTREPID ENOUGH TO GO INTO SPACE. THIS IS NOT STAR TREK.

Also affects bone density.

swish, I would imagine that astronaut digestive systems are higher pressure in low gravity

swish, possible find cure for bone diseases muscle and nerve pain