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
Recent reports suggest that tea can cause brittle bones—but you’ll probably be safe if you drink less than a gallon a day. D
Recent reports suggest that tea can cause brittle bones—but you’ll probably be safe if you drink less than a gallon a day. D
admin
2016-05-26
30
问题
Recent reports suggest that tea can cause brittle bones—but you’ll probably be safe if you drink less than a gallon a day.
Do you fancy a cup of tea? We drink, on average, three mugs a day. But you might want to try another strong alcohol after hearing the case of a 47-year-old woman, published in the New England Journal of Medicine(NEJM), who developed brittle bones and lost all of her teeth after drinking too much tea.
Tea may not be so great for prostates(前列腺)either. Last year, research from the University of Glasgow found that men who drank more than seven or more cups of tea a day had a 50% higher risk of prostate cancer. And in 2009 a paper in the British Medical Journal showed that drinking very hot tea(70℃ or more)increased the likelihood of oesophageal(食管的)cancer.
Still gasping for that cup of tea? There is some evidence that tea can be good for you too, with antioxidant properties, so maybe you’re not actually drinking enough of the stuff.
The poor woman in the NEJM study is not alone. There are a few other cases of people who have damaged their bones through too much tea. But she(like those in other studies)was drinking excessive amounts: 100-150 tea bags a day to make 12 cups of tea. A litre of tea can contain up to 9 mg of fluoride(氟化物), which in excess can cause skeletal fluorosis(氟中毒), reducing bone quality and causing pain and stiffening of the ligaments(韧带). Other studies show you generally need to drink a gallon a day for three decades to develop this condition.
You also shouldn’t worry about the Glasgow study as it wasn’t designed to show that drinking tea actually caused prostate cancer. All it proved was an association and people were only asked how much tea they drank at the start of the study, which went on for about 28 years.
The National Cancer Institute in the U. S. concludes that the evidence isn’t good enough to say tea either harms or helps our health. However it does seem sensible in the light of the BMJ study to wait for your tea to cool down for a few minutes.
Black tea, which makes up 75% of the world’s consumption, may have healthy properties from its plant chemicals called polyphenols(多酚), which are antioxidants. Green tea contains more polyphenols but isn’t so nice to dunk digestive into.
A review of the evidence in the European Journal of Clinical Nutrition, sponsored by the Tea Council—which, the authors say, had no part in the study—found the research showed more than three cups of black tea a day reduced heart disease. It found no evidence of harm "in amounts typically consumed". So as long as you drink less than a gallon of tea a day you should be absolutely fine.
Excessive intake of fluoride may______.
选项
A、increase the likelihood of heart attack
B、cause the bone fracture
C、cause fluorosis in the blood
D、weaken the bone quality and hurt the ligaments
答案
D
解析
事实细节题。本题考查过量摄入氟化物的危害。定位句提到“一升茶水含有9毫克的氟化物,如果氟化物摄入过量,那么会造成人体骨骼氟中毒,骨质下降,韧带疼痛僵硬”,故选项D)为答案。
转载请注明原文地址:https://jikaoti.com/ti/VepFFFFM
0
大学英语四级
相关试题推荐
Theconceptofculturehasbeendefinedmanytimes,andalthoughnodefinitionhasachieveduniversalacceptance,mostofthede
Peopledonotanalyzeeveryproblemtheymeet.Sometimestheytrytorememberasolutionfromthelasttimetheyhadasimilarp
Kodak’sdecisiontofileforbankruptcyprotectionisasad,thoughnotunexpectedturningpointforaleadingAmericancorpora
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
NotSeeingtheForestfortheDollarBillsA)TheU.S.FishandWildlifeServicehasfinallydeclaredthespottedowlanendanger
Keepinghealthyrequiresaconsciouseffort.Youmakechoicesaboutthefoodsyoueat,just【C1】______youmakechoicesaboutgett
A、Returnearlythenextday.B、Photocopythearticlesheneeds.C、AskprofessorGrandforacopyofthearticles.D、Waituntilt
A、BecausehehasfinishedhisstudyofadvancedMathematics.B、Becausehewantstoenjoyhimselfbeforeexamination.C、Becauseh
A、Theysharecertaintraditionalcustoms.B、Theysharecertaintravelplaces.C、Theysharecertaintraditionalfoods.D、Theysha
Acidrain,whichisaformofairpollution,currentlybecomesasubjectofgreatdebatebecauseofwidespreadenvironmentaldam
随机试题
(2011年01月,2009年10月)价格机制发挥作用的形式是_________。
_____________是美籍匈牙利科学家,被称为计算机之父,他首先提出了“程序存储”的思想以及采用二进制作为数字计算机的数制基础,使计算机按照人预先编制的程序进行工作。
女性,53岁,全麻下行胃大部切除术后1小时,麻醉未完全清醒,血压及脉膊正常,呼吸困难,呼吸时喉头有啰音,应考虑
窝洞制备的原则如下,除外
钢材焊接性试验结果所提供的()参数,是焊接工艺评定依据的重要参数。
人(手)孔内净高一般情况下为(),遇有特殊情况按设计要求。
供港澳活羊中转场连续2年未用于供应港澳活羊的,检验检疫机构应吊销其注册证。
某公司十年来一直只生产空调,产品质量较高,经营状况良好。2011年该公司与某空调元器件企业并购,拟生产三种不同型号的空调产品,有四个备选方案,每个方案的投资额、经营期限、市场状态和收益值如下表所示:该公司与某空调元器件企业联合前实施的战略有(
陶行知“生活教育”理论的主要内容有()。
WhichwordinthefirstparagraphdescribestheidealhomeformostAmericans?Keepinghousedoesn’tgetsomuchattentiontoda
最新回复
(
0
)