What is the primary mechanism causing astronauts to temporarily increase in height?

Answer

Decompression and swelling of intervertebral discs

The primary mechanism involves spinal unloading. Gravity no longer compresses the intervertebral discs, which are gel-filled cushions, allowing them to decompress, absorb fluid, and swell, thus lengthening the spinal column.

What is the primary mechanism causing astronauts to temporarily increase in height?

#Videos

Why Do You Grow Taller In Space? - YouTube

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