Older adults who sleep six hours or fewer a night may have elevated risk for dementia and other cognitive issues, a new study finds.

一项新研究发现，每晚睡眠时间不足6个小时的老年人患痴呆症和其他认知障碍的风险会增高。

Researchers at Stanford University measured the dementia risk and cognitive abilities of seniors ages 65 to 85, finding higher risk in patients who regularly slept six or fewer hours compared to those who slept seven or eight hours.

斯坦福大学的研究人员通过对年龄在65岁到85岁之间的老年人的痴呆风险和认知能力测评发现，平时睡眠不足6个小时的人相比睡7个或8个小时的人痴呆风险更高。

Seniors who slept nine or more hours also had lower cognitive functions and other health issues, but the researchers didn't find the same high dementia risk in this group.

平时睡9个小时以上的人也出现了认知能力低下和其他健康问题，但是研究人员发现该群体的痴呆风险不像睡眠不足的人群这么高。

This disruption may be linked to Alzheimer's and other forms of dementia, impacting seniors' ability to remember information, problem-solve, and go through everyday tasks.

睡眠紊乱可能和老年痴呆症或其他类型的痴呆症有关，影响着老年人记忆信息、解决问题的能力，并会影响日常行为。

Sleep disruption can also be caused by - or heighten - depression, cardiovascular disease, and other conditions.

睡眠紊乱还可能由抑郁症、冠心病和其他疾病导致或加剧这些病症。

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