Research: Astronauts' gut health
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The so-called "gut-brain axis" is the well-established bidirectional interaction between the gut microbiome and the brain. In other words, the microbiome in our gut has been found to influence many aspects of our brain: stress physiology and psychology, mood, cognition, and behavior.
A novel challenge has arisen from this finding. Namely, how can astronauts stay alert and healthy through their travels?