日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区

English 中文網(wǎng) 漫畫網(wǎng) 愛新聞iNews 翻譯論壇
中國網(wǎng)站品牌欄目(頻道)
當(dāng)前位置: Language Tips > Normal Speed News VOA常速

Hormone could restore fertility in lean women

[ 2011-04-08 10:40]     字號 [] [] []  
免費(fèi)訂閱30天China Daily雙語新聞手機(jī)報(bào):移動用戶編輯短信CD至106580009009

Some women with very low body fat - such as athletes and professional dancers - stop menstruating and have an increased risk of bone fracture. Now, there's increasing evidence that hormone treatments can help these women.

The study involved young women with extremely low body fat and a condition called hypothalamic amenorrhea. It's part of a self-preservation mechanism shared by many species: when the food supply is low, scarce energy is focused on survival, not reproduction.

"These women had stopped having their periods because they were exercising more than usual, or having stress, or a little bit of decreased food intake," says Sharon Chou, a researcher at Beth Israel Deaconess Medical Center in Boston.

In a new study, she and her colleagues tested whether a synthetic form of the hormone leptin could restore normal menstrual periods.

Leptin was discovered in 1994. It is related to the body's reserves of fat, so the hormone was investigated as a possible treatment to curb the appetites of obese people. That didn't work, but subsequent research found that leptin does play an important role in regulating how the body responds to lower food supplies.

Researchers found women with hypothalamic amenorrhea had low levels of leptin, and a 2004 study suggested that treatments with synthetic leptin (metreleptin) could restore menstruation. This latest research confirms that finding with a larger, more scientifically-rigorous study.

Nevertheless, Chou says the research is still a work in progress, so doctors won't be doing leptin treatments in the immediate future.

"But the idea is, these women can regain their menstrual cycle, menstrual function. And then, we're also looking to see if, used over a longer time period - perhaps one or two years - if these women would regain some of their bone loss."

The paper describing the effectiveness of leptin treatments by first author Sharon Chou, senior author Christos Mantzoros, and colleagues, is published online in the Proceedings of the National Academy of Sciences.

menstruate: when a woman menstruates, there is a flow of blood from her womb, usually once a month 行經(jīng);來月經(jīng)

hypothalamic: 下丘腦

amenorrhea: 閉經(jīng);月經(jīng)不調(diào)

leptin: a protein produced by fatty tissue and believed to regulate fat storage in the body 瘦素

Related stories:

研究表明:過瘦女性易流產(chǎn)

調(diào)查:法國過瘦女性比例居歐洲之首

英十分之四女性節(jié)食減肥反增重

有多少人不滿意自己的外表?

(來源:VOA 編輯:崔旭燕)

 
中國日報(bào)網(wǎng)英語點(diǎn)津版權(quán)說明:凡注明來源為“中國日報(bào)網(wǎng)英語點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國日報(bào)網(wǎng)簽署英語點(diǎn)津內(nèi)容授權(quán)協(xié)議的網(wǎng)站外,其他任何網(wǎng)站或單位未經(jīng)允許不得非法盜鏈、轉(zhuǎn)載和使用,違者必究。如需使用,請與010-84883631聯(lián)系;凡本網(wǎng)注明“來源:XXX(非英語點(diǎn)津)”的作品,均轉(zhuǎn)載自其它媒體,目的在于傳播更多信息,其他媒體如需轉(zhuǎn)載,請與稿件來源方聯(lián)系,如產(chǎn)生任何問題與本網(wǎng)無關(guān);本網(wǎng)所發(fā)布的歌曲、電影片段,版權(quán)歸原作者所有,僅供學(xué)習(xí)與研究,如果侵權(quán),請?zhí)峁┌鏅?quán)證明,以便盡快刪除。
 

關(guān)注和訂閱

人氣排行

翻譯服務(wù)

中國日報(bào)網(wǎng)翻譯工作室

我們提供:媒體、文化、財(cái)經(jīng)法律等專業(yè)領(lǐng)域的中英互譯服務(wù)
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
<strong id="xdwva"><div id="xdwva"></div></strong>
<label id="xdwva"></label>

<thead id="xdwva"></thead>
    <label id="xdwva"></label>

  1. 日本高清色视频在线视频在,国产香蕉97碰碰视频碰碰看,丰满少妇av无码区,精品无码专区在线,久久无码专区免费看,四虎欧美精品永久地址99,亚洲色无码一区二区三区 久久九九久精品国产日韩经典 国产国语国拍精品 啊v在线观看高清无码 视频一区二区欧美 久久精品爱爱唉爱