首页
登录
职称英语
Mind Your Calories or Your Waistline? Cutting bac
Mind Your Calories or Your Waistline? Cutting bac
游客
2024-10-27
39
管理
问题
Mind Your Calories or Your Waistline?
Cutting back the calories may do more than whittle your waistline; it could protect your brain from the effects of aging. A new study suggests that calorie restriction can help slow the normal process of cell death that happens with age.
Researchers say the body naturally goes through a process known as apoptosis, or cell death, to destroy old cells so new ones can be made, and many factors can alter this process. Age-related diseases, such as Alzheimer’s and Parkinson’s, cause a higher-than-normal loss of cells in the brain, which can lead to loss of function.
Previous studies have suggested that calorie restriction can boost life span and mental capacity. That prompted researchers to look at whether cutting calories might also play a role in protecting aging brain cells. They compared levels of proteins indicating brain cell death in two groups of rats. One group was given unrestricted access to food and water throughout their lives. The other was given 40% fewer calories (but still adequate nourishment) than the unrestricted group.
They found that the levels of these proteins increased with normal aging in the rats fed unrestricted diets. The rats given a restricted diet did not have an increase in the levels of these proteins.
Another protein thought to protect from cell death dropped by 60% in the well-fed rats, but it actually increased over time in the calorie-restricted rats.
Finally, DNA fragmentation, a third indicator of cell death, more than doubled in the unrestricted rats with age, but this increase was 36% less in the calorie-restricted rats.
Although the results are promising, researchers say more study is needed to completely understand the processes that lead to cell death and the role nutrition plays in that process.
Meanwhile, they say, their study provides yet another reason to watch what you eat. "We’re not going to do it right away to improve our memories; we’re going to do it probably in general for the first reasons, which would be to prevent cardiovascular disease and cancer," says Christian Leeuwenburgh at the University of Florida. [br] What kind of benefits has been or will be brought to us as a result of the researches?
选项
A、Calorie restriction.
B、Apoptosis.
C、Cardiovascular disease.
D、Cancer prevention.
答案
D
解析
对于这项研究已经或者是将要带来的好处应该是有可能可以防治癌症。而其他本身就是自然存在的现象或者是研究的对象。
转载请注明原文地址:http://tihaiku.com/zcyy/3818948.html
相关试题推荐
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cutti
MindYourCaloriesorYourWaistline?Cutti
Someoftoday’smostcutting-edgetechnologyisnowbeingusedtohelpstud
Someoftoday’smostcutting-edgetechnologyisnowbeingusedtohelpstud
Someoftoday’smostcutting-edgetechnologyisnowbeingusedtohelpstud
随机试题
Alandfreefromdestruction,pluswealth,naturalresources,andlaborsupp
假设上海期货交易所(SHFE)和伦敦金属交易所(LME)相同月份铝期货价格及套利者操作如下表所示。则该套利者的盈亏状况为()元/吨。(不考虑各种交易费
某工程项目业主与承包商签订了工程施工合同,合同中含两人子项工程,估算工程量甲项为
欧元区规定各国年财政赤字与GDP之比不能大于A.5% B.6% C.3%
患者,女,12岁,恒基本中性,上前牙Ⅲ度拥挤,左上中切牙及右上侧切牙与下颌四颗切
A.后堤区 B.副承托区 C.缓冲区 D.边缘封闭区 E.主承托区上颌结
下列哪种情况可导致肾小球滤过率增高A.肾交感神经兴奋 B.注射大量肾上腺素
班级依赖班主任组织指挥,一旦班主任要求不严格,班级就变得松弛、涣散。此时班集体发
2021年1—4月份,规模以上非金属矿物制品业利润总额同比增量约是非金属矿采
能促进小肠吸收铁的是( )。A.维生素A B.维生素B C.维生素C D
最新回复
(
0
)