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
医学
Many people have been keeping on diet in the belief that cutting fat automatically cuts the risk of heart disease and cancer, to
Many people have been keeping on diet in the belief that cutting fat automatically cuts the risk of heart disease and cancer, to
admin
2013-11-30
68
问题
Many people have been keeping on diet in the belief that cutting fat automatically cuts the risk of heart disease and cancer, too. Not so, says research published last week in the Journal of the A-merican Medical Association. Women who trimmed the fat from their diets were just as vulnerable to colon cancer, breast cancer, and heart disease as women who did not.
The message? A low-fat diet isn’ t equivalent to a healthful diet, says Marcia Stefanick, a physiologist at Stanford University’ s Prevention Research Center, who helped run the government-sponsored study. Some 49,000 women between ages 50 and 79 were divided into two groups and followed for an average of about eight years as part of the Women’ s Health Initiative. One group was instructed to cut fat intake to 20 percent of total calories and to eat at least five daily servings of fruits and vegetables and six of grains. The other women were left to eat as they pleased. In the end, both groups had about the same occurrence of colorectal cancer, stroke, and heart disease. A slight difference in the rate of breast cancer among the lower-fat-diet women might be explained by chance alone.
There is hardly a green light to go on a junk-food binge, though, researchers’ caution. For one thing, the women on the diet didn’ t hit their target; they whittled fat intake just to 29 percent—from about 35 percent—by the end of the sixth year of the study. Moreover, there commended diet made no distinction between "good" unsaturated fats and "bad" saturated fats and trans fats, whose importance to heart health has been recognized since the data-gathering started. And since all the women in the study were eating fairly healthfully beforehand, it’ s possible that the small changes in vegetable and grain consumption by the dieting group weren’ t big enough that any benefits registered. Rather than focus on total fat intake, Stefanick advises, go easy on foods containing saturated fats and trans fats and eat more vegetables and fruits and whole grains.
Long-term health may depend more on achieving a healthy body weight and getting regular exercise than on cutting out fat, says Tim Byers, an epidemiologist at the University of Colorado Health Sciences Center in Denver. Overweight people who " lower fat but don’ t control calories can only make tiny changes to their chronic disease risk," he says. Until the links between disease and diet are fully understood, there are other ways to protect yourself; get your cholesterol and blood pressure checked, and schedule that colonoscopy and mammogram. No matter what you eat, says Byers, a long life means knowing early where the problems lie.
We learn from the first paragraph that______.
选项
A、cutting fat means cutting the risk of heart diseases
B、keeping on a low-fat diet helps to reduce the chance for cancer
C、cutting down the fat from diets does not help women keep away from cancer
D、many women cannot stick to low-fat diet
答案
C
解析
文章第一段第一句话指出“减少饮食中脂肪的摄入量可以降低癌症,心脏病发病率”,但是第二句话:Not so,says research published last week马上否决了这种观点。故本题应选C项。
转载请注明原文地址:https://kaotiyun.com/show/4xU3777K
本试题收录于:
医学博士外语题库考研分类
0
医学博士外语
考研
相关试题推荐
下列哪项不符合慢性肾衰竭期(根据国内CRF分期)的特点
Justbeforedawnwereceivedacallthatanunresponsiveinfantwasbeingbroughtbyemergencymedicalservicestoourhospital.
Imagineadiseasespreadingacrosstheglobe,killingmostlymiddle-agedpeopleorleavingthemchronicallydisabled.Thenoned
Weareallmembersofaculture.Howweinterprettherealityaroundus,whatweconsidertobereasonablestatementsandbehavi
Iwasinvitedtopresentalecturetoaclassofgraduatenurseswhowerestudyingthe"PsychosocialAspectsofAging."Istar
A、She’slookingforagift.B、Sheneedsanewpurse.C、She’sgoingtogiveabirthdayparty.D、Shewantstogoshoppingwithher
Itistheyear2050,andAprilblizzardshavegrippedsouthernEnglandforthethirdsuccessiveyearwhileviolentstormsbatter
TheNationalTrusthasworkedforthepreservationofplacesofhistoricinterestandnaturalbeautyinEngland,WalesandNorth
A、Itiswidespread.B、Itisextremelyharmful.C、Itisalmostuseless.D、Itissensitizing.C从“Thecrushed-bodytreatmenthasbe
Anine-year-oldschoolgirlsingle-handedlycooksupascience-fairexperimentthatendsupdebunkingawidelypracticedmedical
随机试题
进给量是工件每回转一分钟,车刀沿进给运动方向上的相对位移。()
BrightonisapopularseasidetownonthesouthcoastofEngland.Notlongago,somepolicemenwerevery【21】.There【22】severals
容易发生局部坏死,产生波动感,破溃后可形成瘘管和瘢痕的淋巴结病变是
患者,男性,32岁,车祸。患者外伤致脾破裂,除立即手术外尚需输入大量血液。给患者输入的是两个献血员的血液,护士在中间应输入
小狗将小宝咬伤的责任由谁来负?李某可否向王某主张偿还打狂犬疫苗的150元钱?
《技术性贸易壁垒协议》适用于所有产品,包括工业品和农产品。()
某公司因开拓市场的需要,决定新增加四名销售部部长,其中一名由公司内部员工通过考核的方式担任,另外三名通过招聘的方式录用而且要求应聘者具有爱岗敬业的精神且年龄不超过25周岁。结合所学知识回答下列问题:实施员工培训主要包括()。
事业单位在进行财产清查时,对盘盈的事业用材料应进行的账务处理是()。
A、3B、4C、5D、6D
A、Becausetheyhaveasmoothsurface.B、Becausetheyareveryexpensive.C、Becausetheyareveryhard.D、Becausetheyturnvery
最新回复
(
0
)