Obese People Have 'Severe Brain Degeneration' 肥胖病人多伴有
文章來源:未知 文章作者:meng 發布時間:2009-08-30 00:23 字體: [ ]  進入論壇
(單詞翻譯:雙擊或拖選)

一項新的研究發現,與體重正常人群相比,肥胖人群腦組織含量少8%左右,他們的大腦也要比后者衰老約16年。而超重人群與正常人相比,腦組織含量缺少約4%,腦齡衰老8年。據研究人員稱,腦組織的缺失會使人逐漸喪失認知,從而極大的增加了患有老年癡呆癥,或其他腦損傷疾病的風險,但是人們仍然可以通過合理飲食和控制體重,來降低發病的可能。

An undated image of the human brain taken through scanning technology.
An undated image of the human brain taken through scanning technology.

A new study finds obese1 people have 8 percent less brain tissue than normal-weight individuals. Their brains look 16 years older than the brains of lean individuals, researchers said today.

Those classified as overweight have 4 percent less brain tissue and their brains appear to have aged2 prematurely3 by 8 years.

The results, based on brain scans of 94 people in their 70s, represent "severe brain degeneration," said Paul Thompson, senior author of the study and a UCLA professor of neurology.

"That's a big loss of tissue and it depletes4 your cognitive5 reserves, putting you at much greater risk of Alzheimer's and other diseases that attack the brain," said Thompson. "But you can greatly reduce your risk for Alzheimer's, if you can eat healthily and keep your weight under control."

The findings are detailed6 in the online edition of the journal Human Brain Mapping.

Obesity7 packs many negative health effects, including increased risk of heart disease, Type 2 diabetes8, hypertension and some cancers. It's also been shown to reduce sexual activity.

More than 300 million worldwide are now classified as obese, according to the World Health Organization. Another billion are overweight. The main cause, experts say: bad diet, including an increased reliance on highly processed foods.

Obese people had lost brain tissue in the frontal and temporal lobes10, areas of the brain critical for planning and memory, and in the anterior11 cingulate gyrus (attention and executive functions), hippocampus (long-term memory) and basal ganglia (movement), the researchers said in a statement today. Overweight people showed brain loss in the basal ganglia, the corona12 radiata, white matter comprised of axons, and the parietal lobe9 (sensory lobe).

"The brains of obese people looked 16 years older than the brains of those who were lean, and in overweight people looked 8 years older," Thompson said.

Obesity is measured by body mass index (BMI), defined as the weight in kilograms divided by the square of the height in meters. A BMI over 25 is defined as overweight, and a BMI of over 30 as obese.

Vocabulary:

deplete:耗盡,衰竭

Alzheimer:阿茲海默氏癥, 老人癡呆癥



點擊收聽單詞發音收聽單詞發音  

1 obese uvIya     
adj.過度肥胖的,肥大的
參考例句:
  • The old man is really obese,it can't be healthy.那位老人確實過于肥胖了,不能算是健康。
  • Being obese and lazy is dangerous to health.又胖又懶危害健康。
2 aged 6zWzdI     
adj.年老的,陳年的
參考例句:
  • He had put on weight and aged a little.他胖了,也老點了。
  • He is aged,but his memory is still good.他已年老,然而記憶力還好。
3 prematurely nlMzW4     
adv.過早地,貿然地
參考例句:
  • She was born prematurely with poorly developed lungs. 她早產,肺部未發育健全。 來自《簡明英漢詞典》
  • His hair was prematurely white, but his busy eyebrows were still jet-black. 他的頭發已經白了,不過兩道濃眉還是烏黑烏黑的。 來自辭典例句
4 depletes 03e466afb0610e2f83b6d28a055c56aa     
使大大的減少,使空虛( deplete的第三人稱單數 ); 耗盡,使枯竭
參考例句:
  • Stress depletes both energy and motivation. 壓力不僅消耗體力而且讓你喪失動力。
  • Scientists refute a longstanding theory of how HIV slowly depletes the body's capacity to fight infection. 科學家駁倒一個愛滋病毒如何慢慢地耗盡身體容量對抗感染的長時間理論。
5 cognitive Uqwz0     
adj.認知的,認識的,有感知的
參考例句:
  • As children grow older,their cognitive processes become sharper.孩子們越長越大,他們的認知過程變得更為敏銳。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.認知心理學者倒很像一個需要通曉鐘表如何運轉的鐘表修理匠。
6 detailed xuNzms     
adj.詳細的,詳盡的,極注意細節的,完全的
參考例句:
  • He had made a detailed study of the terrain.他對地形作了縝密的研究。
  • A detailed list of our publications is available on request.我們的出版物有一份詳細的目錄備索。
7 obesity Dv1ya     
n.肥胖,肥大
參考例句:
  • One effect of overeating may be obesity.吃得過多能導致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易導致肥胖。
8 diabetes uPnzu     
n.糖尿病
參考例句:
  • In case of diabetes, physicians advise against the use of sugar.對于糖尿病患者,醫生告誡他們不要吃糖。
  • Diabetes is caused by a fault in the insulin production of the body.糖尿病是由體內胰島素分泌失調引起的。
9 lobe r8azn     
n.耳垂,(肺,肝等的)葉
參考例句:
  • Tiny electrical sensors are placed on your scalp and on each ear lobe.小電器傳感器放置在您的頭皮和對每個耳垂。
  • The frontal lobe of the brain is responsible for controlling movement.大腦前葉的功能是控制行動。
10 lobes fe8c3178c8180f03dd0fc8ae16f13e3c     
n.耳垂( lobe的名詞復數 );(器官的)葉;肺葉;腦葉
參考例句:
  • The rotor has recesses in its three faces between the lobes. 轉子在其凸角之間的三個面上有凹槽。 來自辭典例句
  • The chalazal parts of the endosperm containing free nuclei forms several lobes. 包含游離核的合點端胚乳部分形成幾個裂片。 來自辭典例句
11 anterior mecyi     
adj.較早的;在前的
參考例句:
  • We've already finished the work anterior to the schedule.我們已經提前完成了工作。
  • The anterior part of a fish contains the head and gills.魚的前部包括頭和鰓。
12 corona jY4z4     
n.日冕
參考例句:
  • The corona gains and loses energy continuously.日冕總是不斷地獲得能量和損失能量。
  • The corona is a brilliant,pearly white,filmy light,about as bright as the full moon.光環帶是一種燦爛的珠白色朦朧光,幾乎像滿月一樣明亮。
TAG標簽: brain obese degeneration
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