时间:2018-12-24 作者:英语课 分类:Scientific American(一)月


英语课

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.


 


You may have noticed that as you get older, you start forgetting more stuff: like, where you left your glasses, or the names of your children. Well, if you’re fed up with those senior moments, put down that pastrami sandwich. Because a new study, published in the January 27th issue of the Proceedings 1 of the National Academy of Sciences, shows that cutting calories actually improves memory in older folks.


Calorie restriction 2 lets lab animals live longer. And these hungry critters tend to be healthier, too: with lower cholesterol 3, better insulin sensitivity, and even slower cognitive 4 decline. But these diets can be draconian 5. And it hasn’t been clear whether they’d offer the same benefits to people.


In this study, scientists asked 50 elderly women to cut the number of calories they consumed by a third. After three months, the researchers found that the dieters were not only slimmer, but they were better than they had been at memorizing lists of words. They also had better insulin levels and fewer markers of inflammation, which suggests that keeping those things under control may help keep the brain fit. It’s one of the cruel ironies 6 of aging: if you want to remember your favorite restaurants, the less you should eat at them.


 


Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.


 



1 proceedings
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
2 restriction
n.限制,约束
  • The park is open to the public without restriction.这个公园对公众开放,没有任何限制。
  • The 30 mph speed restriction applies in all built-up areas.每小时限速30英里适用于所有建筑物聚集区。
3 cholesterol
n.(U)胆固醇
  • There is cholesterol in the cell of body.人体细胞里有胆固醇。
  • They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
4 cognitive
adj.认知的,认识的,有感知的
  • As children grow older,their cognitive processes become sharper.孩子们越长越大,他们的认知过程变得更为敏锐。
  • The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。
5 draconian
adj.严苛的;苛刻的;严酷的;龙一样的
  • You can't expect the people to obey such draconian regulations.你不能指望人民服从如此严苛的规定。
  • The city needs a draconian way of dealing with robbers.这个城市需要一个严苛的办法来对付强盗。
6 ironies
n.反语( irony的名词复数 );冷嘲;具有讽刺意味的事;嘲弄
  • It was one of life's little ironies. 那是生活中的一个小小的嘲弄。
  • History has many ironies. 历史有许多具有讽刺意味的事。 来自《简明英汉词典》
标签: SSS cognitive
学英语单词
Ackland
Aix-Marseille
alludes to
Aureolaria pedicularia
beshrouding
Bessarion
breast-height diameter
brigadiers general
capacity constraint function
chris-craft
clearing and controlling center
cobalt(ii) linoleate
combination turret and copying lathe
coome
correct an error
counting statistics
CPFA
cpvc
Cribb
crown-work
cursor selection field
Dariveren
de power
defensive lock-out
delay retention effect
Didymocarpus adenocalyx
dishd
distressrocket
dumpled
excitonutrient
fash one's thumb about
financial net present value
force magnifier
forest resource
foundation seed nursery
foyer de danse
full-width kier boiling
go into committee
grade of steel
habropoda tainanicola tainanicola
hammer-forging
high concept
high-grade carbon steel
hoffmann-la-roche
Hop o' My Thumb
i-fel
intrinsic strength of liquids
JDMJ
Kallavesi
Lasette
Leroux's method
local hormone
low melting point metal
low-lifers
Lynn Grove
Mobius syndrome
Moroccan crises
music school
myasthenias
negative ion generator
nine-to-fiver
non-insulated container
not a laughing matter s
Osterzhausen
overseas call
packing fraction loss
parosmia
peracchi
phosglycin
plastic resist
pomophobia
protoanthropic
QAP
rated contact current
Rauvolfia yunnanensis
Santa Elena, C.
scheduled frequency
second-stare treatment
shade curtain
short-selling
SL-type cable (separate lead type cable)
solid acid catalyst
St-Priest-de-Champs
St. Simon
stripper shovel
sulton
swelling value
Swiss file
temporary runway
test trunk
tetrasodium pyrophosphates
thermodegradation
thioindoxylic acid
tidal compensation
titanium(ii) sulfide
to let bygones be bygones
tout for votes
vapor pressure chart
vicar general
Walysshe
washingtonias
Wilson's theorem