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Why Do People Shrink Did you ever see the
movie Honey, I Shrunk the Kids It’s about a wacky dad (who’s also a scientist)
who accidentally shrinks his kids with his homemade miniaturizing invention.
Oops! (46) For older people, shrinking isn’t
that dramatic or sudden at all. It takes place over years and may add up to only
an inch or so off of their adult height (maybe a little more, maybe less). And
this kind of shrinking can’t be magically reversed, although there are things
that can be done to stop it or slow it down. (47) .
There are a few reasons. As people get older, they generally lose some
muscle and fat from their bodies as part of the natural aging process. Gravity
(the force that keeps your feet on the ground) takes holds, and the bones in the
spine, called vertebrae, may break down4 or degenerate, and start to collapse
into one another5. (48) But perhaps the most common reason
why some older people shrink is because of osteoporosis.
Osteoporosis occurs when too much spongy bone tissue (which is found
inside of most bones) is broken down and not enough new bone material is made.
(49) Bones become smaller and weaker and can easily break if
someone with osteoporosis is injured. Older people -- especially women, who
generally have smaller and lighter bones to begin with--are more likely to
develop osteoporosis. As years go by, a person with osteoporosis shrinks a
little bit. Did you know that every day you do a shrinking act,
too You aren’t as tall at the end of the day as you are at the beginning.
That’s because as the day goes on, water in the disks of the spine gets
compressed (squeezed) due to gravity, making you just a tiny bit shorter. Don’t
worry, though. (50) . A. They end up6 pressing closer
together, which makes a person lose a little height and become shorter. B.
Once you get a good night’s rest, your body recovers, and the next morning,
you’re standing tall again! C. Over time, bone is said to be lost because
it’s not being replaced. D. Luckily, there are things that people can do to
prevent shrinking. E The kids spend the rest of the movie as tiny
people who are barely visible while trying to get back to their normal
size. F But why does shrinking happen at all