首页
登录
职称英语
For most people, fat is a burden. It doesn t really matter where it appears,
For most people, fat is a burden. It doesn t really matter where it appears,
游客
2023-09-04
20
管理
问题
For most people, fat is a burden. It doesn t really matter where it appears, we just don’t want it. But it turns out that our bodies also make a unique form of fat tissue that behaves remarkably unlike any other: rather than storing excess energy, this fat actually burns through it. It’s called brown fat and health experts confirm for the first time that healthy adults have stores of this tissue, which researchers hope to study further as a potential new weight-loss treatment.
Human newborns have been known to have any significant deposits of brown fat, so called because of its abnormally high concentration of dark-colored mitochondria (线粒体), the engines that sustain cell activity. The primary purpose of brown fat is to regulate body temperature: the mitochondria-packed cells are designed to burn high quantities of sugar, and release that energy as heat—a mechanism that newborns rely on to keep themselves toasty.
As people age, however, the body becomes better at regulating temperature, so brown-fat stores shrink and white fat starts to emerge. A research team in Sweden has found that healthy adults retain a sizable amount of fat in the front and back of the neck expressing the same proteins as brown fat.
Identifying the presence of brown fat is one thing, but activating it to burn more sugar is another. Two studies confirmed that brown-fat cells become more active in the cold. But before we consider joining the Polar Bear Club, can brown fat actually cause weight loss? Brown fat may indeed allow a person to burn more calories with the same amount of consumption. On the basis of animal models, researchers calculate that 50g of brown fat could burn about 20% daily calorie an average person takes in. Leaner people tended to have more brown-fat deposits than overweight individuals. Interestingly, women were twice as likely as men to have active brown fat.
Still, the findings don’t necessarily mean that activating brown fat leads to a slimmer waist. For one thing, the body is especially good at maintaining balance, which is why a boost in calorie-burning can often make a hunger signal and prompt people to eat more to make up for the loss. And even if drug companies could find a way to activate brown fat safely, that excess activity could throw off other metabolic (新陈代谢的) systems and damage your health. [br] What can we learn from the first paragraph?
选项
A、All the people don’t like fat at all.
B、Fat is a kind of tissue storing excess energy.
C、Brown fat has a unique function that any other fat issue doesn’t have.
D、Brown fat can provide a new way to lose weight.
答案
C
解析
推理判断题。由第一段可知,专家们首次确认成年人身上有一种棕色脂肪有着燃烧脂肪的作用,这与其他脂肪的功能是不一样的,所以C)符合文意。
转载请注明原文地址:https://tihaiku.com/zcyy/2984953.html
相关试题推荐
Thesightofeightlongblacklegsmovingoverthefloormakessomepeople
Thesightofeightlongblacklegsmovingoverthefloormakessomepeople
Thesightofeightlongblacklegsmovingoverthefloormakessomepeople
Thesightofeightlongblacklegsmovingoverthefloormakessomepeople
MorethantwomillionpeopleinEuropenowhavefibrebroadbanddirecttot
MorethantwomillionpeopleinEuropenowhavefibrebroadbanddirecttot
ThestateofHawaiiturns50thisyear.Peoplethereshouldbehappy.Buti
[originaltext]Whatis"Americanfood"?Tomanypeople,Americanfoodmean
[originaltext]Whatis"Americanfood"?Tomanypeople,Americanfoodmean
Agreatmanypeopleareafflictedwithshyness.Commonsenseindicatesthat
随机试题
NearlyhalfofUSemployersresearchtheonlineprofilesofjobcandidateso
建筑物的封闭内院,如其短边长度超过()时,宜设有进入内院的消防车道。A.
子宫肌瘤若出现临床症状,主要与以下选项最相关的是:()A.肌瘤的位置
下列转运方式为逆浓度转运的是()。A:被动转运 B:简单扩散 C:主动转运
心脏内传导速度最快的部位是A.窦房结 B.心房肌 C.心室
关于完全竞争市场的说法,正确的有()。 Ⅰ.所有企业都是价格的接受者
典型伤寒患者的血常规检查结果是A.白细胞正常,中性粒细胞增加 B.白细胞减少,
某建筑物地基需要压实填土8000m3,控制压实后的含水量w1=14%,饱和度Sr
A.参苏饮 B.清瘟解毒丸 C.百合固金汤 D.荆防败毒散 E.银翘散治
治疗急性白血病的药物中,易引起凝血因子减少的是A.阿糖胞苷 B.长春新喊 C
最新回复
(
0
)