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Appendix Reasons | Hows Actually To b in you | Curio Facts
Your appendix actually has a reason to be in you.
I am not here to support any theory of evolution, you know everyone has his own point of view. But according to Darwin, humans have been evolving for millions of years, and as a result, we have a few spare parts. Some people have a tiny hole in front of their ears, and we all still have the same muscles monkeys use to move their ears around — except ours don't do anything. The appendix has long been at the top of that list of obsolete traits, but new research from Midwestern University says your appendix probably has a function after all.
When most people think of evolution, they
imagine that famous "monkey to man" image, where an organism evolves
to be more complex as time goes on. But that's not always the case, or even the
rule. Animals are just as likely to lose features through evolution as they are
to gain them.
Take the whale, for example. Its ancestors grew
legs and emerged from the water, only to return and lose them again. But some
traits keep coming back: the eye, wings, and legs, for example (unless you're a
lizard—over and over, different lizards have lost their limbs to become more
snake-like). The fact that those features evolved multiple times tells
scientists that they're pretty useful,
evolutionarily speaking. When an organism
loses a trait for it never to be seen again, that suggests that it didn't
provide much of a benefit. That's the approach Midwestern University
researchers took for the 2017 study they published in the French scientific
journal Comptes Rendus Palevol. They examined the evolution of 533 mammal
species over 11 million years to find points where the appendix had emerged as
a new trait or disappeared entirely. To support the common belief that the tiny
organ is just a vestigial feature with no real benefit, the researchers would
expect to see it evolve only a handful of times and disappear pretty regularly.
But that's not what they found. Instead, the appendix appears to have evolved
between 29 and 41 times, but only disappeared 12 times. It's clear that the
appendix serves some purpose.
How do i live without you?
The leading theory about the appendix is
that it supports the immune system. The study backs this up: Where they found
an appendix, they also found lymph tissue, which is an essential part of the
immune system and can aid in the growth of healthy gut bacteria. Other studies
have shown that people without an appendix are more likely to suffer from
bacterial infections than people with theirs intact.
Of course, that mysterious organ does its
fair share of damage, too. A quarter-million people come down with the painful
and sometimes life-threatening condition of appendicitis every year, and the
standard treatment is to remove the appendix completely. Most people live a
long, healthy life after an appendectomy, however, which could mean that other
parts of the immune system pick up the pace to make up for its absence.
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