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
Can Added Calcium Help Older Bones? New Zealand researchers say guidelines advising seniors to consume at least 1,000 to 1,2
Can Added Calcium Help Older Bones? New Zealand researchers say guidelines advising seniors to consume at least 1,000 to 1,2
admin
2016-08-16
66
问题
Can Added Calcium Help Older Bones?
New Zealand researchers say guidelines advising seniors to consume at least 1,000 to 1,200 milligrams of calcium a day are misplaced.
No proof was found that boosting calcium intake beyond normal dietary levels strengthens older bones or prevents fractures, said researcher Dr. Mark Bolland, a professor at the University of Auckland. "We’ ve gathered all the clinical studies of calcium supplements and dietary calcium intake for both bone density and fractures," said Bolland. " Taken together, we think this is the strongest possible evidence that taking calcium supplements will not be beneficial unless there are clear medical reasons that a calcium supplement is needed," he said.
Moreover,excess calcium supplementation can be harmful, he and other experts said. "The findings probably will surprise clinicians and patients" , Bolland said, " because they have received very strong messages for many years about the importance of calcium for bone health in guidelines for osteoporosis(骨质疏松症)management and by osteoporosis advocacy groups.
"Clinical trials have shown that calcium supplements often cause minor gastrointestinal(胃肠的)side effects such as constipation(便秘)" ,Bolland said. "They also cause a small increased risk of kidney stones, heart attacks, high calcium levels and hospitalization with acute gastrointestinal symptoms. "He also said. "The small risk of these important adverse effects,together with the moderate risk of minor side effects such as constipation, outweighs any benefits of calcium supplements on fracture. "
However,Dr. Duffy MacKay,president for the Council for Responsible Nutrition,disagreed with Bolland’ s conclusions, and countered that scientific evidence does show that calcium reduces fracture risk. "The degree of benefit varies from study to study, "he said. "However, the largest benefit is generally found in those who take their calcium supplements throughout the entirety of a study. Other important factors that influence the benefit of calcium supplementation include giving calcium supplements with other important bone nutrients including vitamin D and vitamin K. "
The clinical studies have been gathered to investigate______.
选项
A、both calcium supplements and calcium intake
B、either calcium supplements or calcium intake
C、either bone density or fractures
D、both bone density and fractures
答案
D
解析
在第二段,Bolland讲到,他们针对钙补剂和饮食钙摄入对骨密度与骨折的影响展开临床研究,就是为了调查钙摄入与骨密度、骨折的关系。故选D。
转载请注明原文地址:https://kaotiyun.com/show/lGhd777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
Themainideaofthefirstparagraphisthat______.InAmericansociety,youngpeopleoften______.
Humanfacialexpressiondifferfromthoseofanimalsinthedegreetowhichtheycanbedeliberatelycontrolledandmodified.
Thenextmorningshetoldusthatthelastquestiondidn’tdeparttillwellaftermidnight.
WhatisthebasichonorintakingpartintheOlympicGames?Allofthefollowingaredoneintheopeningceremonyexcept_____
A.EffectsofACEandACEInhibitorsB.WideUseofACEInhibitorsC.HowtoDealwithHighBloodPressureinPregnantWomenD.
HowmanypeoplediedfromheatinChicagoin1995?Forpeoplewhoareinextremelypoorhealth,heatcanbe
MoreThan8HoursSleepTooMuchofaGoodThingAlthoughthedangersoftoolittlesleeparewidelyknown,newresearchsuggest
A.Thinkingcanpreventthebrainfromshrinking.B.Thereasonwhypeopleareaging.C.Scientistshaveworkedoutawaytokee
Theannoyingthingabouttheschemeisthatit’sconfusing.
HumanIngenuitySincethedawnofhumaningenuity,peoplehavedevisedevermorecunningtoolstocopewithworkthatisda
随机试题
患者女,30岁。消瘦,体重减轻,出现低血糖。实验室检查:Na+135mmol/L,K+6.2mmol/L,24/J、时尿17-OHCS降低,血.ACTH增高,则患者可能患
对偶三角瓣适用于
具有α-羟基酮结构可与碱性酒石酸铜作用生成有色沉淀的药物为
作为金融市场的一个重要组成部分,()具有使资金从资金剩余者流向资金不足者,为资金需求者筹集资金的功能。
加工贸易保证金台帐管理制度对不同类别企业和不同类别的商品分别实行保证金台帐的“空转”和“实转”,请指出下面正确的选项:
积极发展同周边国家的睦邻友好关系是中国外交政策的()。
当今世界,随着经济的日益发展,环境污染也日益严重,以下哪项不是由于环境污染演化而来的问题?()
1999年哪一种股票单股收益最高?()2000年上风高科的单股净资产比深宝安A高()元。
设X为int型变量,执行以下语句,x=10;x+=x-=x-x;x的值为______。
Whataretheguests’comments?
最新回复
(
0
)