Gastrointestinal System

  • Virginia E. Wotring
Part of the SpringerBriefs in Space Development book series (BRIEFSSPACE)


Little is known about the function of the gastrointestinal (GI) system in spaceflight or any changes that might occur in microgravity. Few studies have attempted to address this physiological system in spaceflight, but empirically, our years of spaceflight experience have shown that GI function in microgravity is not very different from GI function in 1 G. Crewmembers have been able to eat and drink without major problems, and when their intake is sufficient, they maintain body weight. Some unsettled questions remain about GI motility and absorption of medications, discussed above under “Absorption.” But by far, the most significant GI complaint in spaceflight is motion sickness, which is not solely a GI problem—it has a significant CNS element (Muth 2006), which is discussed below.


Motion Sickness Benign Paroxysmal Positional Vertigo 5HT3 Antagonist Parabolic Flight Delay Reaction Time 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Virginia E. Wotring 2012

Authors and Affiliations

  • Virginia E. Wotring
    • 1
  1. 1.Johnson Space CenterHoustonUSA

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