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  • This episode of "Life Noggin" is brought to you by AJ Plus.

    AJ plus 為你帶來這集的 Life Noggin

  • Hi there, I'm Lago.

    大家好,我是Lago

  • I might be an ageless animation, but you, on the other hand,

    我是個沒有年齡的動畫,但你

  • are getting older everyday. And with old age comes a lot of interesting changes.

    每天正不斷的變老,並且隨著年齡產生許多有趣的變化

  • It's Thursday, so that means we're answering one of your questions.

    今天是星期四,所以我們會回答你們問的其中一個問題

  • And this week, we're gonna find out why does hair turn gray with old age. Let's do this.

    這星期我們將要了解,為什麼老了頭髮就會變白,我們開始吧

  • Let's figure out how hair gets its color in the first place. Hair, like the skin, gets

    讓我們了解頭髮是怎麼有顏色的,頭髮跟皮膚一樣

  • its color from a pigment called melanin.

    是從一種黑色素得到顏色

  • Did you know that melanin formation happens before we were born?

    你知道黑色素在我們出生前就形成了嗎?

  • Did you know that all hair is white before it grows?

    你知道所有頭髮在長出來以前都是白色的嗎?

  • Well, you do now. Dark pigments are called the eumelanin, and light pigments are called pheomelanin,

    嗯,你現在知道了,深色的色素叫「真黑素」,淺色的叫「褐黑素」

  • which blend together to create a broad spectrum of beautiful hair colors.

    色素混和在一起,創造出許多漂亮的髮色

  • These pigments are composed of cells called melanocytes that are positioned on the

    這些色素由黑色素細胞組成的,他們位在

  • skin surface, which the hair follicles grow through.

    皮膚表面,而那也是毛囊生長的地方

  • Melanocytes inject melianin into cells that contain keratin, which the protein of hair is made up of.

    黑色素細胞把黑色素注入細胞,而這些細胞裝著角質素,就是製成頭髮蛋白質的角質素

  • There are many factors that can change the pigment of your hair, both internal and external,

    有很多因素可以改變你頭髮的色素,包含內在因素和外在因素

  • things such as genetics, hormones, age, the climate that you live in, toxins

    像是基因、賀爾蒙、年齡、你居住地的氣候、毒素

  • and even chemical exposure

    甚至是暴露在化學因子下

  • can all affect hair pigmentation. I would check with your parents or grandparents

    都可以影響頭髮的顏色,我建議問問你的爸媽或祖父母

  • and find out when they went gray,

    他們的頭髮什麼時候開始變白的

  • That's when you probably will too. As you grow older, your hair turns gray is the

    而你的頭髮也有可能在那個年齡變白。隨著年齡變白的頭髮

  • result of fail management of melanin cells.

    是黑色素細胞失調的結果

  • They may die or just function improperly. The less melanin you have the

    他們可能是死掉了,或者是不恰當的運作,你的黑色素越少

  • grayer your hair becomes.

    你的頭髮就會變得越白

  • Each hair follicles grow separately and contains its own amount of melanin.

    每個毛囊都各自生長,容納著不同數量的黑色素

  • This is why certain hairs turn gray at different times. There's still no solid

    這就是為什麼每根頭髮都在不同的時間變白,目前還沒有明確的

  • proof as why this happens. More recent studies have shown that hair follicles

    證明可以解釋它的發生,許多最近的研究顯示,毛囊

  • produce small amount of hydrogen peroxide,

    會製造少量的過氧化氫

  • which over time can lead to gradual loss of hair color. I personally would

    隨著時間過去,過氧化氫會導致頭髮漸漸褪色,我個人會

  • take great care over a hairless blockhead any day.

    隨時好好照顧我沒有頭髮的"方塊頭" (註:blockhead 也有笨蛋的意思)

  • Thank you so much for watching. As usual, I'll be answering a new question every Thursday.

    非常感謝你的觀看,跟平常一樣,我每個星期四會回答新的問題

  • So ask anything you wanna know in the comments on Facebook and Twitter.

    所以請你問任何你想了解的問題,把它留言在facebook或twitter上

  • If you like this video, you should definitely click the one that just popped up on the screen or

    如果你喜歡這個影片,你絕對要點擊剛跳上螢幕的東西

  • check the description for the link.

    或看看它的描述

  • "Proof that the pudding is in the eating"

    要吃了這個布丁才知道

  • The meaning behind this expression is that to experience something to the

    這句話的意思是,為了徹底了解

  • fullest you need to try it out yourself,

    你必須親自去嘗試

  • like pudding, try it, you'll like it. Unless you're allergic somehow.

    吃布丁吧,你會喜歡的,除非你不知怎麼辦到的對布丁過敏

This episode of "Life Noggin" is brought to you by AJ Plus.

AJ plus 為你帶來這集的 Life Noggin

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B2 中高級 中文 美國腔 黑色素 頭髮 變白 色素 年齡 毛囊

為什麼頭髮會變灰?(Why Your Hair Will Turn Gray)

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    許允迪   發佈於 2015 年 11 月 26 日
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