How does the stomach work in space? Do astronauts feel constant need to throw up since the contents are bouncing around inside?

Question

How does the stomach work in space? Do astronauts feel constant need to throw up since the contents are bouncing around inside?

In: Biology

Answer 1

Do you start vomiting when lying in your bed? Gravity is no longer pulling your ingested food down, is it?

Only if you have problems with the muscles on top of your stomach, which is called acid reflux. The contents of the stomach are held down by muscles, not by gravity.