首页
登录
职称英语
Mind Your Calories or Your Waistline? Cutti
Mind Your Calories or Your Waistline? Cutti
游客
2023-11-20
29
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] The result of the researches so far may help, as asserted by one of the researchers,
选项
A、to prevent cardiovascular disease and cancer.
B、to understand the processes that lead to cell death.
C、to improve our memories.
D、to do what we think is right.
答案
A
解析
可以根据提问,在最后一段里找到一位研究人员说的话:would be to prevent cardiovascular disease and cancer。
转载请注明原文地址:https://tihaiku.com/zcyy/3203346.html
相关试题推荐
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cuttingbac
MindYourCaloriesorYourWaistline?Cutti
MindYourCaloriesorYourWaistline?Cutti
MindYourCaloriesorYourWaistline?Cutti
BurnCaloriesWhileYouDoYourChores!You
BurnCaloriesWhileYouDoYourChores!You
随机试题
PASSAGETHREE[br]What’sthemainideaofthefirstparagraph?Itdepictsthena
Wefindthatbrightchildrenarerarelyheldbackbymixed-abilityteaching.
HowtoReduceStressLifeisfullofthingsthatcauseus
[originaltext][16]IhavebeendoingsomeresearchintowhatpeopleinBrit
组织提供福利的原因不包括( )A.政府法律规定的要求 B.劳动力市场竞争压力
上世纪七八十年代,美国采用下列哪些措施消除了日本对美国霸权的挑战:()A.冷战
下列不属于协议转让的成交方式是( )。A.定价委托成交 B.点击成交 C.
根据下列图表,完成问题。 某省2006年企业整体生产经营状况统计表 (本表
国际注册投资分析师协会设有()。A:会员大会B:理事会C:主席和副主席D:
优化财政支出结构需要正确安排财政支出中的( )和购买性支出的比例。A.消费性支
最新回复
(
0
)