Question

Why do the height of old people get shorter

Answer 1

because bones start to loose calcium..

Answer 2

First, as we age, the discs between our vertebrates lose fluid, so they flatten a bit and your vertebrates simply come together, so your spine is actually shrinking a little bit

The arches of your feet also tend to flatten a bit as we age. Finally, we lose muscle mass as we age -- especially in our abdomen, which leads to poorer posture -- which gives the appearance of being shorter.

mark as brainliest