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
36
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://kaotiyun.com/show/rzY7777K
0
大学英语四级
相关试题推荐
Tallmenaremorelikelytohavechildrenthantheirverticallychallengedfriendsbecausewomenfindheightattractive,anews
Peopledonotanalyzeeveryproblemtheymeet.Sometimestheytrytorememberasolutionfromthelasttimetheyhadasimilarp
AmericansandTheirCarsA)Ithasbeenoneoftheworld’smostenduringandpassionateloveaffairs:Americansandtheircars.I
Kodak’sdecisiontofileforbankruptcyprotectionisasad,thoughnotunexpectedturningpointforaleadingAmericancorpora
Inrecentyears,agrowingbodyofresearchhasshownthatourappetiteandfoodintakeareinfluencedbyalargenumberoffact
Globalwarmingisatrendtowardwarmerconditionsaroundtheworld.Partofthewarmingisnatural;wehaveexperienceda20,00
AmongthemorecolorfulcharactersofLeadville’sgoldenagewereH.A.W.Taborandhissecondwife,ElizabethMcCourt,betterk
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
Moreandmoreoftheworld’spopulationarelivingintownsorcities.Thespeedatwhichcitiesaregrowinginthelessdevelop
随机试题
筒述中国特色社会主义共同理想与共产主义远大理想的关系。
男,35岁。下肢水肿2周。血压28/14kPa,尿蛋白(+++),红细胞10~15/HP,尿糖(+),血肌酐160μmol/L,血白蛋白32g/L。下列哪项对诊断本病价值最小
A,术前用、术后不限B,术前用、术后不用C,术前不用、术后也不用D,术前用、术后必须用E,术前不用、术后用甲亢术前应用普萘洛尔
我国现有民事立法中,属于民事普通法的是()。
()对于蓝牙耳机相当于电话对于()
2000年底公司负债总额为多少?( )1999年主营业务收入为多少?( )
【中国青年党】
设A,B都是n阶矩阵,其中B是非零矩阵,且AB=O,则().
以下程序用来判断指定文件是否能正常打开,请填空。#include<stdio.h>main(){FILE*fp;if(((fp=fopen("test.txt","r"))=【】))
A、TheeruptedlavaB、Thedestructiveash.C、Theunbearableheat.D、Thepoisonousgas.BB是反复明确听到的信息。A先被女士提及,但随即被男士否定。原文出现了最高级the
最新回复
(
0
)