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肚脐眼儿里面有什么?

What's Inside Your Belly Button

近本世纪之交 科学家Georg Steinhauser遇到一个问题
Near the turn of this century, scientist Georg Steinhauser had a problem.
他对这个问题深深着迷:
He was fascinated by the question:
为什么有些人的肚脐里聚集的绒毛比别人多?
Why do some belly buttonscollect more lint than others?
但是之前没人知道答案
But no one knew the answer.
于是 他花了三年收集自己肚脐里的绒毛进行研究
So for three years he collected his own belly-button lint to find out.
在采访了朋友 并分析自己的503个样本后
And after interviewing friends and analyzing 503 of his own samples,
Steinhauser发现了罪魁祸首:腹部的汗毛
Steinhauser discoveredthe culprit: stomach hair.
它们会刮下T恤上的纤维
It scratches off tiny T-shirt fibers
并把这些纤维导向肚脐
and directs them towards the belly button.
这样其中一个谜团大概解决了
So that might be one mystery solved,
但人体这个奇异的裂缝里并不只有绒毛
but lint isn’t the only thing inside these bizarre human crevices.
肚脐眼儿里面有什么?
肚脐是个疤痕 你的第一个疤痕
Your belly button is ascar, your very first one.
当医生剪断你的脐带 它就形成了
It forms when a doctorsnips your umbilical cord,
并且 根据愈合情况 肚脐有可能外翻
And depending on how it heals, you could have an outie,
或者更有可能内翻
or more likely, an innie.
而内翻肚脐的环境
And innies are ripe for colonization,
不仅容易聚集绒毛 毛发和死皮细胞
not only by lint, hair,and dead skin cells,
也有利于细菌的定殖
but also by bacteria.
某项研究中 60名志愿者拭抹他们的肚脐
In one study, 60 volunteersswabbed their belly buttons.
研究者之后分析这些样本
Researchers then analyzed the samples
发现了超过2300种细菌
and found more than2,300 kinds of bacteria.
平均每个肚脐有67种不同的细菌
That’s an average of 67different kinds per belly button.
现在 这些细菌的很多种并不是肚脐独有的
Now many of those microbesaren’t unique to belly buttons,
比如能导致葡萄球菌感染的葡萄球菌
like staphylococcus, whichcan lead to staph infections.
它出现在鼻子 喉咙 头发上
It shows up in noses, throats, hair, and,
是的 甚至肚脐里
yes, even belly buttons.
但研究者还发现了其它
but the researchers also discovered other bacteria
从未在人类皮肤上发现过的细菌
never before seen on human skin
比如海洋单胞菌
lik Marimonas,
科学家以前只在海洋中发现过
which scientists had previously only seen in the ocean.
他们甚至发现了厨师用来制作奶酪的细菌
And they even found bacteriathat chefs use to make cheese,
没错 真的有人那么干了
yes, somebody did exactly that.
她在培养皿中接种了这种肚脐细菌
She grew the belly-buttonbacteria in a petri dish
然后将其添加到牛奶中
and then added it to milk.
果然 几个小时后
Sure enough, after a few hours,
牛奶凝结成奶酪
the milk curdled into cheese.
肚脐眼布里干酪 有人要吗?
Belly-button Brie, anyone?
大多数情况下 肚脐里的微生物是无害的
Now for the most part, the microbes in your navel are harmless.
事实上 最近的研究表明
In fact, recent studies suggest that
身体上的细菌可以强化皮肤的防御系统
bacteria on your body may strengthen your skin’s defense system.
但如果你从不清理肚脐
But if you never clean your belly button,
它们会毫无阻碍地生长
they’ll grow unencumbered,
这会成为一个问题
and that can be a problem.
最好的情况是肚脐会开始发臭
The best-case scenario is that your belly button will start to smell.
常见的肚脐微生物 比如棒状杆菌累积起来
When common navel microbes, like corynebacterium, build up,
会发出刺鼻的气味 类似于体臭
they emit pungent odors,similar to body odor.
但最坏的情况是肚脐会感染
But the worst case is that your navel will get infected.
不只是葡萄球菌感染 还有引起链球菌性咽炎的链球菌
Not just by staph but also by microbes that cause strep throat
以及酵母菌等微生物感染
and yeast infections.
没错 肚脐会被酵母菌感染
That’s right. You can get a yeast infection in your belly button,
这会导致肚脐瘙痒 发红
which can lead to itching and redness.
并分泌出透明或灰白的排出物
And cause a clear or off-whitedischarge to leak out,
这些排出物看起来就像白软干酪
which almost looks like cottage cheese.
现在奶酪听起来怎么样?
So how does that cheese sound now?
肚脐可能受到微生物从外界的入侵
While microbes colonize yourbelly button from the outside,
也可能受到来自内部的入侵
there could also be aninvader from the inside.
我们说的是肚脐疝
We’re talking about belly-button hernias.
在子宫中 脐带通过腹肌上的一个开口
In the womb, the umbilical cord runs from your mom to you,
从母体链接到你身上
passing through an openingin your abdominal muscles.
通常这个开口会在出生后密封
Normally that openingseals up after you’re born,
但某些情况下 它不会完全闭合
But in some cases, it neverreally closes all the way.
这给内部器官滑移到这里
This can allow internalorgans to slip through,
从而在肚脐后面形成一个凸起
creating a bulge behind your belly button.
在美国 每5个新生儿就有1个患有肚脐疝
Navel hernias affect as many as one in five newborns in the US.
但肚脐疝很少危及生命
but they’re rarely life-threatening,
在成人中则更不常见
and are far less common in adults.
事实上 只要每周用温肥皂水
In fact, as long as you rinse your belly button
清洗一次肚脐
with warm soapy water once a week,
所需忍受的最坏情况也只是一点绒毛罢了
the worst you’ll have to put up with is a little fluff.

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肚脐眼洗过吗?里面到底有什么?

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视频来源

https://www.youtube.com/watch?v=LK8lFuTszQk

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