People with mild mental impairments of the kind studied - known as mild cognitive impairment - typically have some memory difficulties, such as forgetting people's names or misplacing items.

被调查的这些智力不健全(即我们通常说的认知障碍)的人通常患有记忆障碍，如忘记别人的姓名，错放物品等。

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One paper suggested regular cocoa intake led to improved mental function in elderly patients with mild cognitive impairment, a condition which is often a precursor to dementia, he recalls.

他回忆说，曾有一篇论文谈论到，可可脂的日常摄入能提高老年人的心理机能，但会造成轻微的认知损伤，而这种损伤通常是痴呆的前兆。

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Mild cognitive impairment is the stage between normal ageing and dementia, with symptoms including mild memory or mental problems but no significant disability.

轻度认知障碍介于正常老化和老年性痴呆状况之间，有轻度意识或精神问题，但是没有明显疾病。

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That was the finding of a new study of cognitive impairment, or a loss in mental abilities.

VOA: special.2010.07.07

In the new government-funded study, volunteers ages 75 and older with either normal mental function or mild cognitive impairment took a twice-daily placebo or ginkgo biloba extract (for a total of 240 milligrams per day).

CNN: Study: Ginkgo doesn't cut dementia risk