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
If you have gone on a diet and reached your goal, chances are good that when you stop dieting you will regain all the weight you
If you have gone on a diet and reached your goal, chances are good that when you stop dieting you will regain all the weight you
admin
2010-04-30
58
问题
If you have gone on a diet and reached your goal, chances are good that when you stop dieting you will regain all the weight you lose. After several weeks on a low-calorie diet—900 calories or fewer— the body conserves energy by showing the speed at which it burns calories. This slow-down explains in part why your weight loss may cease after a few weeks. When you eventually return to eat a normal amount of food, your body may continue to burn calories at the slower rate, storing the remaining calories as fat. So if you are on a strict diet, your body may need fewer calories to maintain the same weight; losing weight becomes more difficult.
Doctors know that as you gain weight the fat cells in your body (most of us average 30 billion of them) become enlarged. But there is a limit to how big a fat cell can get, and very fat people develop additional fat cells—something more than 100 billion. It now appears that you can add fat cells at any point during your life, although the number you have is influenced by a combination of your history of dieting and your genetic makeup.
Fat cells differ distinctly from other cells in that they are made mostly of fat instead of protein and apparently they never go away, even after dieting. Instead, they merely shrink. Dr. Jukes Hirsch of Rckefeller University has examined the body tissue of very fat people who have lost weight, and found that it resembles that of starvation victims. Perhaps, he supposes, it is the billions of undersize, "hungry" cells that drive many formerly fat people off their diets.
New research reveals that your hungry cells aren’t the only signal senders that tempt you toward the refrigerator. Another culprit may be the hormone insulin. Insulin tums sugar and fat into fuel for the body. In addition, some researchers believe that high levels of insulin are a factor in hunger and appetite—and may drive you to overeat.
Exercise helps maintain your weight and seems to bring insulin levels down, says Dr. Donald S. Robertson, a medical director. "Any weight -loss program must fail," he said, "unless it incorporates a certain amount of exercise."
According to the passage, it can be concluded that______.
选项
A、it has something to do with parents whether one is fat or not
B、there are many factors that lead to overweight
C、it is the hormones insulin that makes you fat
D、you gain weight because you stop dieting
答案
B
解析
事实细节题。文章倒数第二段中提到New research reveals that your hungry cells aren’t the Only signal senders that tempt you toward the refrigerator.Another culprit may be the hormone insulin.可知hungry cells和hormone insulin是tempt you toward the refrigerator的原因。由此可知导致肥胖的因素不是一
转载请注明原文地址:https://kaotiyun.com/show/VJOK777K
0
大学英语六级
相关试题推荐
A、Tryingtotelephonesomeone.B、Attendingaconcert.C、Waitinginline.D、Cancelingreservations.CWhatarethemanandwomand
Comparedwiththeprofitsofmusicsector,thoseofmoviesaremuchsmaller.TheboxofficeofTerminatorismorethanthatof
Onecalledherbossa"bitchfromhell"whileanotheradmitted"lyingthroughhisteeth"atinterview.BoththeBritishjob(36)
WhyhavesomeparentsofschoolchildrenbroughtthecityDepartmentofEducationandtheMayortocourt?Mr.Trumpthinksthat
Thefatherthought______(他可以说服女儿改变决定).
"Ifanythingisimportantitisthefuture.Thepastisgone,andthepresentexistsonlyasafleetingmoment.Everythingthat
Wemodempeopleeatnotonlywhenwearehungrybutalsowhenweareinbadmood.Continuingstresscanmakepeople’sbodiesin
Dr.Deprezholdstheviewthatdepressioncallbefrustrating____________________(因为要从抑郁症中恢复到正常需要时间).
A、Heisseriouslyillandstillinhospital.B、Marywilldohisworkinstead.C、Morrisonishisdoctor.D、Hewillgotoworktom
Atsometimeinyourlife,youmayhaveastrongdesiretodosomethingstrangeorterrible.However,chancesarethatyoudon’t
随机试题
A.当机体免疫功能下降时B.识别特异性抗原体C.容易出现空洞、排菌、有传染性D.破坏与修复常同时进行E.结核性炎症初期阶段或病变恶化复发时
HIV感染最常用的筛检方法为
男,2岁。1个月来食欲减退、消瘦伴乏力,近2周低热、盗汗、干咳。2个月前曾患麻疹。查体:消瘦,未见瘢痕,颈部可触及数个肿大淋巴结,质硬,无明显压痛,心脏检查未见异常,右肺可闻及少许干、湿啰音,肝肋下3cm,脾不大。首选的检查是
遇到障碍物、风流分岔和()可以引起井下风流的局部阻力能量损失。
受赠人有下列行为,赠与人可以撤销赠与的有()。
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。()
下列做法在日常生活中可行的是()。
InancientGreeceathleticfestivalswereveryimportantandhadstrongreligiousassociations.TheOlympianathleticfestivalh
毛泽东提出“使马克思主义在中国具体化”科学命题的会议是()。
在关系模型中,每个关系模式中的关键字
最新回复
(
0
)