Constipation frequently affects astronauts during long-duration spaceflight.
Previously, the reasons why microgravity leads to digestive problems were not well understood.
A recent study by the University of Copenhagen, in partnership with NASA, examined blood samples from astronauts to identify biochemical markers indicating alterations in the gastrointestinal tract.
The findings suggest that microgravity alters hormone levels and enzyme activity in the digestive system, potentially slowing transit time. This knowledge may help develop targeted countermeasures, such as dietary adjustments or medication, to protect crew health on future missions.