Blood tests reveal why astronauts get constipated in space

Science Daily | Mon, 28 Sep 2026 08:49:59 EDT

Astronauts in space,
Gut bacteria shift their roles,
Slow food brings distress.

Spaceflight may dramatically change the gut within weeks, causing bacteria to break down more protein as food moves more slowly through the intestines. The shift could help explain astronaut constipation and may have wider effects on health, making it an important concern for future missions…

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