2 . New research has found that people with mild cognitive impairment (认知损坏) may not necessarily develop dementia (痴呆) and, in fact, having higher education and advanced language skills more than doubles their chances of returning to normal.
The study, led by researchers at the University of Waterloo, may reassure those with mild cognitive impairment as it contradicts a common assumption that the condition is simply an early stage of dementia. People with mild cognitive impairment show signs of cognitive decline, but not enough to prevent them from performing typical daily tasks. They have been considered at higher risk of progressing to the more severe cognitive decline seen in dementia.
“Possessing high cognitive reserve, based on education, high academic grades, and written language skills, may predict what happens years after someone receives a diagnosis of mild cognitive impairment,” said Suzanne Tyas, a professor in the School of Public Health Sciences at Waterloo and lead author. “Even after considering age, genetics and established risk factors for dementia, we found that higher levels of education more than doubled the chances that people with mild cognitive impairment would return to normal cognition instead of progressing to dementia.”
The study’s findings have meanings for treatment and research in people with mild cognitive impairment.
“If individuals with higher cognitive reserve are more likely to improve even without treatment, then this needs to be taken into consideration when recruiting participants for clinical trials of prospective treatments and when interpreting the results of these trials,” Tyas said, adding there’s no cure for most causes of dementia, so prevention is key.
1. About mild cognitive impairment, which is consistent with the study?
| A．It surely results in dementia. | B．It is an early stage of dementia. |
| C．It will stop people's daily action. | D．It doesn’t surely lead to dementia. |
2. How is one’s cognitive reserve assessed?
| A．Through personal income. | B．Through social frequency. |
| C．Through his education. | D．Through personal relationship. |
3. What is the most significant to do with dementia?
| A．Early prevention. | B．Medical care. |
| C．Proper cure. | D．Specific medicine. |
4. What is the main idea of the text?
| A．People with cognitive impairment show cognitive decline. |
| B．Age and genetics are established risk factors for dementia. |
| C．A study focuses on the consequence of cognitive impairment. |
| D．Higher education and language skills may help stop dementia. |
