 |
 |
 |
 |
 |
 |
||
 |
 |
 |
 |
 |
| 5 | 1/1 | 返回列表 |
| 查看: 1047 | 回復: 6 | |||
| 當前只顯示滿足指定條件的回帖，點擊這里查看本話題的所有回帖 | |||
sgh_119至尊木蟲 (職業(yè)作家)
|
[交流]
【Pure water】Why women live longer than men
|
||
|
It is the ultimate battle of the sexes - and women usually win. Now scientists have come up with a new theory for why woman live, on average, longer than men: men are more biologically ‘disposable’. The controversial theory, developed by Professor Tom Kirkwood of the University of Newcastle, suggests that the female body is better at carrying out routine maintenance and keeping the body’s cells alive. Professor Kirkwood believes there is now growing evidence to suggest that men are more disposable than women, because the cells of their bodies are not genetically programmed to last as long as they are in females. Many scientists believe that the aging process is caused by tiny faults throughout our body. As the tiny faults build up the length of our lives is determined by how quickly our body is able to carry out running repairs. As the cells miss opportunities to repair themselves our body gradually degrades until we eventually die. Professor Kirkwood’s theory behind why our cells do not mend every tiny problem in our body is that it is built into our DNA. The reason we do not live forever is because it would have cost our hunter-gather ancestors too much energy to constantly replenish cells when hunger was a more immediate danger, he says. ‘Under the pressure of natural selection to make the best use of scarce energy supplies, our species gave higher priority to growing and reproducing than to living forever,’ he writes in the magazine American Scientist. 'In humans, as in most animal species, the state of the female body is very important for the success of reproduction', he writes. ‘The foetus needs to grow inside the mother’s womb, and the infant needs to suckle at her breast. So if the female animal’s body is too much weakened by damage, there is a real threat to her chances of making healthy offspring. The man’s reproductive role, on the other hand, is less directly dependent on his continued good health.’ |
回復此樓» 猜你喜歡
材料與化工考研調劑
已經有5人回復
-
299求調劑
已經有6人回復
-
材料292調劑
已經有5人回復
-
085404電子信息284分求調劑
已經有4人回復
-
收08調劑生
已經有3人回復
-
081700 調劑 267分
已經有9人回復
-
293求調劑
已經有5人回復
-
086003食品工程求調劑
已經有4人回復
-
0856材料專碩353求調劑
已經有5人回復
-
求調劑
已經有6人回復
xia_chong
金蟲 (文壇精英)
- ESEPI: 43
- 應助: 0 (幼兒園)
- 貴賓: 1.591
- 金幣: 10270.8
- 散金: 2377
- 紅花: 34
- 沙發(fā): 160
- 帖子: 12455
- 在線: 1941.8小時
- 蟲號: 804303
- 注冊: 2009-07-06
- 性別: GG
- 專業(yè): 粒子物理學和場論
- 管轄: English Cafe
5樓2010-11-11 11:26:42
nono2009
超級版主 (文學泰斗)
No gains, no pains.
-
專家經驗: +21105 - ESEPI: 1
- 應助: 28684 (院士)
- 貴賓: 513.911
- 金幣: 2555230
- 散金: 27828
- 紅花: 2148
- 沙發(fā): 66666
- 帖子: 1602255
- 在線: 65200.9小時
- 蟲號: 827383
- 注冊: 2009-08-13
- 性別: GG
- 專業(yè): 工程熱物理與能源利用
- 管轄: 科研家籌備委員會
3樓2010-11-11 06:50:20
feng1205
木蟲 (正式寫手)
- 應助: 0 (幼兒園)
- 貴賓: 0.06
- 金幣: 3919.1
- 帖子: 451
- 在線: 88.2小時
- 蟲號: 498092
- 注冊: 2008-02-03
- 專業(yè): 凝聚態(tài)物性 II ：電子結構
4樓2010-11-11 10:34:00
★ ★ ★
lxuyan(金幣+3):Thanks for sharing your opinion~~:tiger04::tiger23::tiger25::tiger40::tiger28: 2010-11-11 14:07:42
lxuyan(金幣+3):Thanks for sharing your opinion~~:tiger04::tiger23::tiger25::tiger40::tiger28: 2010-11-11 14:07:42
|
i do not agree with above headline,there are many vivid facts around us that so many males live longer than females. maybe we should keep a cautious attitude toward scientist's researches, because most of them are earn a living by composing so called research. of course,we should do our survey basing on facts. at least,i consider it as an imperfect declaration , this is my own opinion. welcom to point out my mistakes  |
6樓2010-11-11 13:02:02
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 07化學280分求調劑 +4 | 722865 2026-03-23 | 4/200 |
|
|---|---|---|---|---|
|
|
[考研] 化學308分求調劑 +3 | 你好明天你好 2026-03-23 | 3/150 |
|
|
|
[考研] 上海電力大學材料防護與新材料重點實驗室招收調劑研究生（材料、化學、電化學，環(huán)境） +3 | 我愛學電池 2026-03-23 | 3/150 |
|
|
[考研]
 一志愿070300浙大化學358分，求調劑！
+4
|
酥酥魚.. 2026-03-21 | 4/200 |
|
|
|
[考研]
一志愿東華大學化學070300，求調劑
+7
|
2117205181 2026-03-21 | 8/400 |
|
|
|
[考研] 求調劑一志愿海大，0703化學學碩304分，有大創(chuàng)項目，四級已過 +6 | 幸運哩哩 2026-03-22 | 10/500 |
|
|
|
[考研] 305分求調劑（食品工程） +4 | Sxy112 2026-03-21 | 6/300 |
|
|
|
[考研] 生物學調劑 +5 | Surekei 2026-03-21 | 5/250 |
|
|
|
[考研] 354求調劑 +7 | Tyoumou 2026-03-18 | 10/500 |
|
|
|
[考研] 一志愿華中科技大學071000，求調劑 +4 | 沿岸有貝殼6 2026-03-21 | 4/200 |
|
|
|
[考研] 286求調劑 +10 | Faune 2026-03-21 | 10/500 |
|
|
|
[考研] 材料學碩333求調劑 +3 | 北道巷 2026-03-18 | 3/150 |
|
|
|
[考研] 0703化學297求調劑 +3 | Daisy☆ 2026-03-20 | 3/150 |
|
|
|
[基金申請]
學校已經提交到NSFC，還能修改嗎？
 40+4
|
babangida 2026-03-19 | 9/450 |
|
|
|
[考研] 303求調劑 +5 | 睿08 2026-03-17 | 7/350 |
|
|
|
[考研] 一志愿華中科技大學，080502，354分求調劑 +5 | 守候夕陽CF 2026-03-18 | 5/250 |
|
|
|
[考研] 一志愿 西北大學 ，070300化學學碩，總分287，雙非一本，求調劑。 +3 | 晨昏線與星海 2026-03-18 | 3/150 |
|
|
|
[考研] 一志愿南昌大學，327分，材料與化工085600 +9 | Ncdx123456 2026-03-19 | 9/450 |
|
|
|
[考研] 321求調劑 +9 | 何潤采123 2026-03-18 | 11/550 |
|
|
|
[考研] 一志愿 南京航空航天大學大學 ，080500材料科學與工程學碩 +5 | @taotao 2026-03-20 | 5/250 |
|