首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
As concern over Alzheimer’s disease grows, more Americans are turning to expensive and potentially unsafe supplements that claim
As concern over Alzheimer’s disease grows, more Americans are turning to expensive and potentially unsafe supplements that claim
admin
2010-01-15
70
问题
As concern over Alzheimer’s disease grows, more Americans are turning to expensive and potentially unsafe supplements that claim to enhance memory. But prevention of age-related memory loss may be no further away than your refrigerator, and no more expensive than a bag of groceries, experts say. With the aging population of baby boomers in the United States, more research is being done than ever before on diseases such as Alzheimer’s and other forms of dementia. Scientists are developing a better understanding of why memories fade, and along the way they are finding new ways to combat the decline.
For one thing, research increasingly suggests that diet may be important in preventing Alzheimer’s. As the brain ages, it loses the ability to protect itself from the barrage of commonplace dangers it faces every day, particularly inflammation and oxidation, a process which allows damaging free radicals to attach themselves to cells.
While it’s not entirely clear what causes Alzheimer’s disease, amyloid plaque——a goopy, fibrous substance akin to fur balls in the brain——plays a key role. As the plaque builds up, it causes more oxidation and inflammation, and begins to kill off brain cells. In addition, brain cells often stop communicating with each other as people age, making it harder for the brain to process thoughts, retain short-term memory and create new cells.
"Old neurons are like old married couples——they don’t talk to each other very much any- more. They just sit in the room with the remote and stare at the TV," says Dr. James Joseph, director of the Neuroscience Lab at the Human Nutrition Research Center on Aging at Tufts University in Boston. While research in the field of aging and nutrition is still in its infancy, scientists have found that diet may help minimize the brain’s sensitivity to oxidation and inflammation, as well as improve brain cells’ ability to communicate with each other.
One of the most intriguing areas of research involves the role of antioxidants, potent chemicals in plants that protect against free radicals, highly active molecules that damage cells. Antioxidants are what give fruits and vegetables their bright colors. Plants produce these chemicals to protect themselves from environmental insults, such as pollution, and when humans eat plants, they also reap the protective benefits.
According to the passage, humans will benefit from _________ whey they eat them.
选项
A、potent chemicals
B、damaged cells
C、non-polluted fruits
D、antioxidants in plants
答案
D
解析
细节题。文章的最后一段讨论了antioxidants在植物中的作用.Antioxidants(抗氧化剂)可以使植物免受污染的侵害(…protect themselves from environmental insults,such as pollution.),有效对抗一些破坏细胞生长的高度活跃的分子(…protect against free radicals,highly active molecules that damage cells.),而人吃了含有抗氧化剂的植物后,也能从中受益(…when
转载请注明原文地址:https://kaotiyun.com/show/BUnK777K
0
专业英语四级
相关试题推荐
PASSAGETWOWhatdoestheword"taxing"meaninthefirstparagraph?
A、Sheconsiderswhetherthestorysellswell.B、Sheconsiderswhetherthestoryisbelievable.C、Sheconsiderswhetherthereare
FiveCommonMistakesinConversationsandTheirSolutionsI.NotlisteningA.Problem:mostpeople【T1】________
OnWednesday,Sept.23,PresidentBarackObamausedhisfirst-everaddresstotheU.N.GeneralAssemblytotryandreversethe
Eveniftheyproducednootherpositiveresult,theattacksontheLondonUndergroundhavecompelledEuropeansofallfaithst
MostofushaveanimageofastandardEnglishinpronunciation,andverycommonlyinGreatBritainthisis"ReceivedPronun
GymCrazeI.ThegymcrazebecomesChinese【T1】__________.A.asignof【T2】_______________.B.gym-goersinclude:-unive
Manyofthemostflexibleexamplesoftooluseinanimalscomefromprimates(theorderthatincludeshumans,apes,andmonkeys).
Thereseemsnevertohavebeenacivilizationwithouttoys,butwhenandhowtheydevelopedisunknown.Theyprobablycameabout
Althoughcustomerskeepcomplainingabouttheirpoorservice,they’vemadeno______tomakeanyimprovement.
随机试题
Itlooks____it’sgoingtorain.
胃肠的神经支配包括_______和_______两大部分。两者相互协调,共同调节胃肠功能。
脑内动脉静脉瘘的超声特异表现是()
哪些疾病可用倍他米松治疗()。
某市工商行政管理局在对中外合资企业检查时,发现在其辖区内有一家设在中国境内的中日合资电子游戏软件开发公司,生产一种宣扬日本武土道精神的游戏软件,因此,工商行政管理局以该游戏软件具有日本军国主义色彩为由,将游戏软件没收,并对该中日合资公司处以3万元罚款。日方
租户常常要缴纳订金,以保证其在租约有效期间内能够很好地履行租赁合约。()
1.一个合格的监理工程师应当具备哪些基本素质?2.公路工程监理的主要内容有哪些?
申请经理层人员的任职资格,应当具备的条件有( )。
县级人民代表大会或者人民政府可以设立的机构为()。
(2009下软设)在采用结构化方法进行系统分析时,根据分解与抽象的原则,按照系统中数据处理的流程,用______来建立系统的逻辑模型,从而完成分析工作。
最新回复
(
0
)