英語(yǔ)聽(tīng)力 學(xué)英語(yǔ),練聽(tīng)力,上聽(tīng)力課堂! 注冊(cè) 登錄
> 在線聽(tīng)力 > 有聲讀物 > 英語(yǔ)雜志 > 英語(yǔ)聽(tīng)力文摘 >  第678篇

英語(yǔ)聽(tīng)力文摘665 粉刺的學(xué)問(wèn)

所屬教程:英語(yǔ)聽(tīng)力文摘

瀏覽:

手機(jī)版
掃描二維碼方便學(xué)習(xí)和分享
https://online2.tingclass.net/lesson/shi0529/0007/7643/665.mp3
https://image.tingclass.net/statics/js/2012
The Science Of Acne

Acne: the scourge of adolescence. Most people endure it at some point, and can’t wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules that comprise the skin condition that affects over 80% of teenagers and nearly 20% of adults.

What Is Acne?

Acne begins with the pores from which hair grows. These pores contain sebaceous glands that produce a type of oil that lubricates hair and skin. When the glands produce the right amount of oil, there’s usually no trouble.

But, when a pore gets clogged with too much oil and dead skin cells, problems arise. The onset of puberty in most kids involves the production of hormones. These hormones cause the sebaceous glands to make excess oil. Too much oil clogs pores and attracts bacteria, which feed on the oil and begin to multiply. A clogged pore can only stand so much internal pressure before its walls break, allowing the oil and bacteria to seep under the surrounding skin. This gives rise to something every teen dreads: a pimple.

Acne Causes

Contrary to popular belief, eating foods such as pizza and chocolate does not cause or exacerbate acne. Whether or not a person will have acne as a teenager or adult is largely a matter of genetics: if your parents had it, there’s a good chance you will too.

Although there is no cure for acne, simple remedies to prevent a build-up of oil in pores, such as washing your face with soap and warm water and using oil-free cosmetics, can help.

粉刺的學(xué)問(wèn)

粉刺:青春期的災(zāi)難。許多人都在忍受它帶來(lái)的麻煩,迫切地想要擺脫白頭、黑頭、丘疹、膿皰的困擾。這些問(wèn)題滋擾著超過(guò)80%的年輕人和近20%的成人。

粉刺是什么?

粉刺在毛發(fā)生長(zhǎng)的毛孔上出現(xiàn),這些毛孔包含了皮脂腺,而皮脂腺能產(chǎn)生可以滋潤(rùn)毛發(fā)和皮膚的油。當(dāng)這些腺體產(chǎn)生適量油脂的時(shí)候,通常不會(huì)出現(xiàn)問(wèn)題。

但是,當(dāng)一個(gè)毛孔被過(guò)多的油脂和死去的皮膚細(xì)胞堵塞,問(wèn)題出現(xiàn)了。許多孩子的青春期伴隨著荷爾蒙的產(chǎn)生。這些激素導(dǎo)致皮脂腺分泌多余的油脂。過(guò)多的油脂會(huì)堵塞毛孔并滋生細(xì)菌,細(xì)菌靠這些油脂生存和繁殖。一個(gè)堵塞的毛孔的承載量是有限的,當(dāng)壓力過(guò)大時(shí)毛壁會(huì)破裂,油脂和細(xì)菌會(huì)滲漏到附近的皮膚上。每個(gè)年輕人的噩夢(mèng)----粉刺產(chǎn)生了。

粉刺的根源

不同于大眾的認(rèn)知,吃諸如披薩和巧克力之類的食物并不會(huì)導(dǎo)致或者惡化粉刺。不管是青少年還是成年人,人們產(chǎn)生粉刺的原因在于基因:如果你的父母有過(guò)粉刺,你很可能也會(huì)有。

盡管沒(méi)有根治粉刺的方法,但有辦法可以防止毛孔的油脂堆積:比如用溫水和肥皂洗臉,使用不含油脂的化妝品。

用戶搜索

瘋狂英語(yǔ) 英語(yǔ)語(yǔ)法 新概念英語(yǔ) 走遍美國(guó) 四級(jí)聽(tīng)力 英語(yǔ)音標(biāo) 英語(yǔ)入門 發(fā)音 美語(yǔ) 四級(jí) 新東方 七年級(jí) 賴世雄 zero是什么意思臨沂市張家王莊花園小區(qū)英語(yǔ)學(xué)習(xí)交流群

網(wǎng)站推薦

英語(yǔ)翻譯英語(yǔ)應(yīng)急口語(yǔ)8000句聽(tīng)歌學(xué)英語(yǔ)英語(yǔ)學(xué)習(xí)方法

  • 頻道推薦
  • |
  • 全站推薦
  • 推薦下載
  • 網(wǎng)站推薦