Spaceflight could change how astronauts swallow, eat and drink in subtle ways
Researchers are studying how microgravity affects the complex human process of swallowing, which relies on both muscle coordination and subtle gravitational assistance. The findings help understand the physiological challenges astronauts face while living in space.
Why it matters
Understanding how spaceflight impacts basic human biological functions is critical for long-term space exploration and astronaut health.
Keeping your food from floating away in space is only half the battle. NASA via Getty Images https://theconversation.com/spaceflight-could-change-how-astronauts-swallow-eat-and-drink-in-subtle-ways-282659 https://theconversation.com/spaceflight-could-change-how-astronauts-swallow-eat-and-drink-in-subtle-ways-282659 Link copied Share article Share article
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Imagine trying to swallow a sip of water while your face feels stuffed with congestion, your sense of taste is dulled and your body is floating 250 miles (400 kilometers) above Earth.
That scenario is part of everyday life for astronauts aboard the International Space Station.
Spaceflight changes the human body in dramatic ways. Muscles shrink, bones lose density and bodily fluids shift toward the head . Astronauts often return with puffy faces, stuffy noses and a feeling similar to a lingering cold. When you’re congested, you might have more difficulty swallowing – but does microgravity also affect this important body function?
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