English 中文網(wǎng) 漫畫(huà)網(wǎng) 愛(ài)新聞iNews 翻譯論壇
    中國(guó)網(wǎng)站品牌欄目(頻道)
    當(dāng)前位置: Language Tips > Special Speed News VOA慢速

    Biology may keep new fathers close to home

    [ 2011-09-22 12:50]     字號(hào) [] [] []  
    免費(fèi)訂閱30天China Daily雙語(yǔ)新聞手機(jī)報(bào):移動(dòng)用戶編輯短信CD至106580009009

    This is the VOA Special English Health Report.

    A few months ago, government researchers released the latest American Time Use Survey. It included the average time per day that Americans spent providing child care between 2006 and 2010.

    Among adults living with children under age six, women spent one hour and six minutes a day providing physical care. This is care like bathing or feeding a child. Men spent 26 minutes.

    Yet a new study suggests that men are biologically designed to care for their children. It confirmed that testosterone levels drop after men become fathers.

    Biology may keep new fathers close to home

    Testosterone is the main sex hormone responsible for the changes when a boy develops into a man. Women also produce testosterone but in much lower amounts.

    Earlier studies showed that fathers have lower levels of testosterone than childless men. Christopher Kuzawa at Northwestern University in Evanston, Illinois, says there are at least two possible explanations.

    CHRISTOPHER KUZAWA: "Is it that fatherhood reduces your testosterone? Or do men with low testosterone to begin with, are they more likely to become fathers? And so what we did is, we followed men through time and measured their hormones before and after they became fathers."

    Professor Kuzawa is a biological anthropologist. He and other researchers used information from a long-term study of men in the Philippines. That study measured their testosterone levels in 2005 and 2009.

    Some of the men were childless; others became fathers during that time.

    CHRISTOPHER KUZAWA: "And those are the men where we see the largest decline in testosterone."

    The study found that testosterone levels dropped by about half immediately after the birth of a child, then rose some. Men who were active in child care produced less than those who were not active.

    Testosterone levels may drop in fathers to get them to pay more attention to parenting than to reproducing. But Professor Kuzawa says there are other good reasons as well.

    CHRISTOPHER KUZAWA: "Having high levels of testosterone can increase your risk for diseases like prostate cancer [and] testicular cancer. Also, testosterone can suppress the immune system so that you're less capable of fending off pathogens."

    The study is in the Proceedings of the National Academy of Sciences.

    Studies have shown a similar drop in other mammals and in birds after mating periods to allow for care giving. Animal studies have shown that the greater the involvement of males, the lower their testosterone levels.

    We asked Thomas McDade, another author of the study, if testosterone levels also drop in men who adopt children. He says that is an interesting question and the "next obvious thing to study."

    And that's the VOA Special English Health Report, written by Caty Weaver. I'm Jim Tedder.

    testosterone: male sex hormone that is produced in the testes and responsible for typical male sexual characteristics 睪酮,睪丸素(男性荷爾蒙的一種)

    anthropology: the scientific study of the origin, the behavior, and the physical, social, and cultural development of humans 人類學(xué)

    prostate: a gland in male mammals that surrounds the neck of the bladder and urethra and secretes a liquid constituent of the semen 前列腺

    testicular: of or relating to a testicle or testis 睪丸的;睪丸狀的

    pathogens: an agent that causes disease, especially a living microorganism such as a bacterium or fungus 病原體;病原菌;致病菌

    Related Stories:

    研究:三個(gè)月大嬰兒能察覺(jué)他人情緒

    文化:在澳大利亞當(dāng)爸爸

    經(jīng)濟(jì)危機(jī)影響男性性激素水平

    男人手指長(zhǎng)度決定對(duì)女人吸引力

    (來(lái)源:VOA 編輯:張若瓊)

     
    中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津版權(quán)說(shuō)明:凡注明來(lái)源為“中國(guó)日?qǐng)?bào)網(wǎng)英語(yǔ)點(diǎn)津:XXX(署名)”的原創(chuàng)作品,除與中國(guó)日?qǐng)?bào)網(wǎng)簽署英語(yǔ)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(qǐng)與010-84883631聯(lián)系;凡本網(wǎng)注明“來(lái)源:XXX(非英語(yǔ)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(qǐng)與稿件來(lái)源方聯(lián)系,如產(chǎn)生任何問(wèn)題與本網(wǎng)無(wú)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(qǐng)?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(guó)日?qǐng)?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
     
     
    乱人伦中文视频高清视频| 亚洲欧洲日产国码无码网站 | 中文有无人妻vs无码人妻激烈| 免费无码成人AV在线播放不卡 | 亚洲国产精品无码久久青草 | 69堂人成无码免费视频果冻传媒 | 日韩精选无码| 夜夜添无码一区二区三区| 亚洲开心婷婷中文字幕| 91久久九九无码成人网站| 曰韩精品无码一区二区三区| 中文字幕在线资源| 亚洲伊人成无码综合网| 91无码人妻精品一区二区三区L | 亚洲精品无码专区久久久| 欧美日韩中文字幕久久伊人| 日韩无码系列综合区| 精品无码日韩一区二区三区不卡 | 中文字幕精品视频| 无码不卡亚洲成?人片| 久久av无码专区亚洲av桃花岛| 亚洲大尺度无码无码专区| 中文字幕日韩第十页在线观看| 中文国产成人精品久久不卡| 亚洲av无码国产精品色在线看不卡 | 精品视频无码一区二区三区| 国产色爽免费无码视频| 亚洲精品人成无码中文毛片| 三级理论中文字幕在线播放| 亚洲 日韩经典 中文字幕| 无码日韩人妻AV一区二区三区| 毛片无码全部免费| 精品人妻系列无码人妻免费视频 | 99久久人妻无码精品系列蜜桃| 亚洲AV无码一区二区乱子伦| 一区二区三区无码视频免费福利| 中文字幕无码久久精品青草| 亚洲中文字幕丝袜制服一区| 中文字幕精品无码一区二区| 无码播放一区二区三区| 精品国产一区二区三区无码|