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  • What is this stuff?


  • Cheerio mates, Trace ear for DNews. Earwax is weird and gross, it's basically congealed ear sweat.

    大家好,我是 DNews 的 Trace。耳屎很奇特及噁心,基本上就是耳朵的汗水凝結而成的

  • There are two kinds of sweat: most is the cooling watery kind, but some is the thicker smellier kind-- which shows up in the armpit and ear and a few other places.


  • Earwax isn't really wax, it's mostly dead skin cells, proteins and oils added by the apocrine gland.


  • The junk is there to protect the inner ear from water or infection and also to stop footholds of bacteria from entering your body.


  • Earwax fights off some diseases and can lubricate and protect the ear from infection and water.


  • It's a pretty common system of protection in mammals. The wax builds up over time, and


  • in some species can reveal a lot about their past. Late last year, researchers at Baylor University

    甚至在某些物種裡可以展現他們的歷史。去年的後半年,Baylor 大學的學者

  • used the earwax of a blue whale to reveal when it went through puberty, which years it was able to find a lot of food,


  • and when pollutants like mercury were introduced to the whale's environment.


  • Whale earwax isn't quite the same as human earwax, but based on studies like this, current research is exploring what earwax can teach us!


  • This week, a study of human cerumen -- the medical term for earwax -- dove into the stuff nose first

    這週,有一個關於人體耳垢的研究(cerumen 是耳垢的醫學用語)搶先發現

  • and found the smell of your earwax can give away your ancestry!


  • Caucasian human earwax smells stronger than East Asian or Native Americans humans!


  • Research published in the Journal of Chromatography B explored the ABCC11 gene, which affects sweat, and

    於 Chromatography B 期刊登出的研究,探索了 ABCC11 這個基因,它會影響到汗水

  • thus earwax, in humans. The type commonly found in Caucasians creates a stickier earwax


  • and more stinky body odor, while the type in East Asians creates a dryer, flakier earwax and usually less stinky body odor.


  • It's not that the odors themselves are that different, it's the volatile compounds in the earwax are in different amounts.


  • Volatile compounds are the tiny particles we sense when we smell something.


  • Knowing this, scientists can use earwax, not only to tell ethnicity, but in the future


  • they're going to try to follow those researching the whale wax and see what secrets your ear wax holds.


  • There are diseases which leave traces in ear wax once they appear in the body.


  • It might even catalog what you've eaten, or where you've been, based on molecules that get trapped in there! Doctors of the future might be


  • able to diagnose a possible immune system invader, or health risk, all of just with a digital sniff of your earwax...


  • Now, your cerumen is protecting you from infection, lubricating your ears, and keeping a health record for your doctor,


  • but even knowing ALL THAT, there are those of you who will totally want to get rid of it.


  • Firstly, don't use a cotton swab. Not in the EAR CANAL. Outer ear? Sure! Knock yourself out.


  • Inner ear? NO WAY! Sometimes, when you poke around in there with cotton swabs,


  • you're actually INCREASING the amount of earwax buildup, you're mushing it together and causing blockages!


  • Stop it! Oh, and ear candling is silly and gross. Studies show it doesn't even work and it's not recommended.


  • If you REALLY do want to get rid of it, talk to a pharmacist or a doctor. They've got drops you can buy.


  • But why would you want to get rid of this stuff? It's great! Did we change your opinion on earwax?


  • Tell us on below in the comments and subscribe for more videos seven days a week. Hit me up on Twitter @trace501 if you have any questions for me, and we will see you around!

    可以在下面的留言告訴我們,並訂閱更多影片,一週七天都有!如有任何問題,可以在 Twitter 上聯絡我。下次見!

What is this stuff?



影片操作 你可以在這邊進行「影片」的調整,以及「字幕」的顯示

B1 中級 美國腔 藍鯨 汗水 耳朵 人體 體味 研究

耳屎有什麼作用呢? (Why Do We Need Earwax?)

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    羅紹桀 發佈於 2015 年 11 月 26 日