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
Collagen (胶原蛋白) supplements A) Any soup maker worth their salt knows that a good, full-bodied stock is semisolid and unstable
Collagen (胶原蛋白) supplements A) Any soup maker worth their salt knows that a good, full-bodied stock is semisolid and unstable
admin
2019-04-27
52
问题
Collagen (胶原蛋白) supplements
A) Any soup maker worth their salt knows that a good, full-bodied stock is semisolid and unstable when chilled, and the essential ingredient to make that happen is plenty of bones. It’s why my grandmother, and now I, consider chicken feet the secret ingredient in our soups, and it explains some of the appeal of today’s bone soup craze. It turns out that bones—from meat, poultry or fish—provide more than just luxurious texture: they also provide a type of protein that has become a major trend in the supplement market: collagen.
B) Collagen is the main structural protein of connective tissue in animals, found not only in bones but also skin, cartilage (软骨 ) and tendons (肌腱). When collagen is heated in water, as in soup making, it results in gelatin (明胶), which explains that desirable jellylike texture after refrigeration. And yes, that is where the powder in those little gelatin packets used for desserts and other dishes comes from. When we eat it, gelatin is digested like any other protein— it is broken down into individual amino acids (氨基酸) that our bodies can use to build whatever protein it needs— including our own collagen. As we age, however, our bodies’ collagen production becomes less efficient, and the tissues that depend on it, such as our skin and joints, don’t get repaired the way they used to, which explains, at least in part, why our skin starts to wrinkle and we have more aches and pains as the years tick by.
C) That’s where the supplements come in. Manufacturers have found a way to apply enzymes (酶) to gelatin to create protein chains called collagen hydrolysates (水解物). These small collagen chains may be absorbed by the body to be used directly in the tissues. Predictably, there are a lot of exaggerated claims around these supplements, but there is also a lot of promising, genuine research pointing to benefits, particularly for more youthful-looking skin and help with joint pain.
D) Several studies show improved skin flexibility and hydration and reduced formation of deep wrinkles after taking collagen hydrolysate supplements for six weeks or more, with participants older than 30 seeing the biggest improvement.
E) A 2016 study in the Journal of Agriculture and Food Chemistry showed that collagen hydrolysates can be transferred through the bloodstream directly to the skin, which explains the probable pathway for these effects. The supplements may also help improve brittle nails, according to a small study published in 2017 in the Journal of Cosmetic Dermatology in which participants took the supplements for 24 weeks.
F) Collagen hydrolysates have also been shown to help with joint pain in athletes and those suffering from osteoarthritis, with participants in the greatest pain getting the most relief. A 2018 meta-analysis published in the British Journal of Sports Medicine that examined various supplements used for osteoarthritis identified collagen as one "demonstrating clinically important effects for pain reduction in the medium term." However, over the long term, the supplements didn’t help any more than a comfort.
G) Besides the fact that observed benefits have mostly involved short-term studies—there is not enough evidence that the effects are anything more than fleeting—there are several other things to consider before you run out and buy collagen supplements. Although the science is building, it is relatively new and there is still a lot to learn, particularly in identifying what types of collagen chains work with different conditions. Also, although side effects appear minimal, there have been reports of digestive problems when supplements are taken in large amounts.
H) On top of that, the bulk and cost of the supplements may be prohibitive. Supplements in pill form require swallowing six a day to get a six-gram dose. (The doses used in the studies generally ranged from five to 12 grams a day.) Powders, which can be dissolved in hot or cold liquids, are perhaps less burdensome but are roughly double the price, running from about $15 to more than $40 for a month’s supply. Also noteworthy: If you are looking for a general protein supplement, collagen alone would not be the best choice because it is not a complete protein—it lacks the essential amino acid.
I) Considering that those who benefited most from collagen supplements in the studies were those who generally ate the least amount of meat and were possibly, therefore, not getting enough quality protein, it’s worthwhile, whether you decide to try a supplement or not, to turn your attention to optimizing (使尽可能完善) your body’s own collagen-making machinery. That means getting adequate protein overall, from meat, poultry, fish and plant proteins such as beans, nuts, seeds and grains. And you need to get enough vitamin C—found in foods such as citrus fruits, berries, bell peppers and green, leafy vegetables—which is also essential for collagen production.
J) It’s also worth noting that, although it’s not in hydrolysate form, one cup of chicken stock or bone broth offers about six grams of collagen—rich protein in a tasty and satisfying way.
K) This is a classic response to research that found nutrients or supplements had a benefit. Instead of recommending that people imitate the research to take the nutrient or supplement that the research found to be beneficial, the recommendation is virtually always "eat a balanced diet"—the practice that people were following before they benefited from the nutrient or supplement.
L) The standard American diet contains too much protein. This has been known for decades. The excess protein in the standard American diet causes or contributes to many diseases. As Americans who overdose on protein, many of their "sudden" health problems, which have been developing for decades, can be traced in whole or in part to all that cheese, chicken, bacon, beef, cream sauce and other dietary excesses and misinformation resulting in obesity, Type-2 diabetes, and other preventable diseases.
M) So a dietician perpetuates the myth that "those who ate the least meat" might not be getting enough "quality protein." However, meat eaters have many problems from their diet, one of which is protein levels that are too high. Protein is in everything, and they’d have to eat a pathetically non-nutritious diet to compensate.
Meat eaters usually have high protein levels and need to take non-nutritious food to balance them.
选项
答案
M
解析
转载请注明原文地址:https://kaotiyun.com/show/LkZ7777K
0
大学英语四级
相关试题推荐
Forthispart,youareallowed30minutestowriteanessaycommentingonthesaying"Misfortunemaybeanactualblessing."You
A、Itisundergoingadrasticreform.B、Ithasmuchroomforimprovement.C、Itlaysemphasisoncreativethinking.D、Itprioritiz
A、Teachers.B、Policymakers.C、Publichealthprofessionals.D、Schooladministrators.A文章最后说该项研究持续的调查结果可能会对政策制定者、公共卫生专业人员和学校管理人员有
Withtheworld’spopulationestimatedtogrowfromsixtoninebillionby2050,researchers,businessesandgovernmentsarealre
A、Itsprotectionisoftenneglectedbychildren.B、Itcannotbefullyrestoredoncedamaged.C、Therearemanyfalsenotionsabou
A、Thelivesoftheirparents.B、Makingabetterlifeforallpeople.C、ThetroubleinAmericanfamilies.D、Thestrongopinions.
A、Forcompanionship.B、Foramusement.C、Forprotectionagainstrobbery.D、Forhunting.A短文提到,“如今,城里人养狗最重要的原因是做伴”,故A正确。
A、Depressing.B、Refreshing.C、Painful.D、Delightful.A男士在谈到圣诞节的天气时,提到有一点点令人压抑,因此答案为A。B“令人耳目一新的”、C“令人痛苦的”和D“令人高兴的”与男士的描述不符。
A、Youngcouple.B、Middle-agedcouple.C、Classmates.D、Teammates.B细节推断题。由对话中不断出现的honey可知男女二人是情侣或者夫妻关系,故C和D可以排除。而后来女士提到男士25年前在高中打
A、CountriesofAmericaandEurope.B、CountriesintheMiddleEast.C、Jewishcountries.D、India.A信息明示题。短文开头就指出ThecountriesofA
随机试题
简述纽曼系统模式的三级预防。
下列关于高层混凝土结构重力二阶效应的观点,哪一项相对准确?
某施工单位承担一项基站设备安装工程,工作内容包括:机房内基站及配套设备安装调测,30~50m高的地面自立式铁塔上天馈线系统安装,接地系统安装。工期为7月1日至8月31日。因工期紧张,项目部招收了部分塔上作业人员,自行组织了技术和安全培训即上岗作业;上塔前
某水闸加固改造工程土建标共有甲、乙、丙、丁四家潜在投标人购买了资格预审文件,经审查乙、丙、丁三个投标人通过了资格预审;在规定时间内乙向招标人书面提出了在阅读招标文件和现场踏勘中的疑问.招标人确认后应在规定时间内将招标文件的答疑以书面形式发给()。
( )用于中空玻璃的第一道密封。
创业板上的企业经营不善也不太可能转方向,这点和主板上的公司也不同,除了成长迅速、稳固自己的行业地位外,别无他途______成长性不佳,就代表着死亡;而投资者也就可能______。填入横线部分最恰当的一项是()。
春天:夏天:秋天
Is是一个列表,内容如下:Is=[123,’’456’’,789,’’123’’,456,’’789’’]请补充如下代码,将列表Is中第一次出现789位置的序号打印出来。注意,不要直接输出序号。采用列表操作方法。Is=[123,’’456’’,78
Youwillhearfivedifferentpeoplecomparingtheirlastjobwiththeirpresentjob.Foreachextract,therearetwotasks.F
HowBirdsFindWayHome?Theabilityofbirdstoreturntoafamiliarplacefromanydistanceisaremarkablefeatofnature
最新回复
(
0
)