楼主#更多 发布于：2021-03-16 21:40
Fluid intelligence is the type of intelligence that involves short-term memory and the ability to think quickly，logically，and abstractly in order to solve new problem.It peaks in young adulthood（between the ages of 20 and 30），levels out for a period of time.and then generally starts to slowly decline as we age.But while aging is inevitable，scientists are finding out that certain changes in brain function may not be.
One study found that muscle loss and the accumulation of body fat around the abdomen，which often begin in middle age and continue into advanced age，are associated with a decline in fluid intelligence.This suggests the possibility that lifestyle factors，such as the type of diet you follow and the type and amount of exercise you get throughout the years to maintain more lean muscle，might help prevent or delay this type of declinc.
The researchers looked at data that included measurements of lean muscle.abdominal fat and subcutaneous fat（the type of fat you can see and grab hold of）from more than 4，000
middle-to-older-aged men and women and compared that data to reported changes in fluid intelligence over a six-year period.They found that middle-aged people with higher measures ofabdominal fat scored worse on measures of fluid intelligence as the years went by.
For women, the association may be attributable to changes in immunity that resulted from excess abdominal fat; in men, the immune system did not appear to be involved. Future studies could explain these differences and perhaps lead to different treatments for men and women.
Meanwhile, there are steps you can take to help reduce abdominal fat and maintain lean muscle mass as you age in order to protect both your physical and mental well being. The two most generally recommended lifestyle approaches are maintaining or increasing your levels of aerobic exercise and following a Mediterranean-style diet that is high in fiber from whole grains, vegectables, and other plant foods and eliminates highly processed foods. If you carry extra belly fat, speak with your health care provider to determine a plan that is best for you.
1.A. pausesB. return. peaksD. fades
2.A. altematively B. formally C. accidentally D. generally
3.A. whileB. sinceC. onceD. until
4.A. detection B. accumulation C. consumption D. separation
5.A. possibility B. decisionC. goalD. requirement
6.A. delay1B. ensureC. seckD. utilize
7.A. modified B. supported C. included D. predicted
8.A. devoted B. compared C. convertedD. applied
9.A. withB. aboveC. byD. against
10.A. livedB. managed. scoredD. played
11.A. ran outB. sct offC. drew inD. went by
12.A. Superior B. attributable C. parallelD. resistant
13.A. restored B. isolated C. involved D. controlled
14.A. alterB. spreadC. removeD. explain
15.A. compensations B. symptoms (. demandsD. treatments
16.A. Likewise B. Meanwhile C. ThereforeD. Instead
17.A. changeB. watchC. countD. take
18.A. well-being B. processC. formationD. coordination
19.A. levelB. loveC. knowledgeD. space
20.A. designB. routineC. dictD. prescription