In depressed patients, BDNF has been shown to help repair brain atrophy, which can lift symptoms of the disease.

研究表明，抑郁症病人的BDNF帮助修复脑萎缩，这样使得抑郁的症状显露出来。

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Brain shrinkage or atrophy is a natural part of ageing but it is known to be accelerated in people with Mild Cognitive Impairment (MCI) – a kind of memory loss and forgetfulness – and Alzheimer's.

其实，随着年龄的增长，脑萎缩或功能性衰退是身体很自然的变化，并不一定是由疾病引起的，但是研究显示，这种自然老化却可以加剧人们患轻度认知障碍（简称MCI，即一种使记忆力衰退的疾病）和老年痴呆症的机率。

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Distinguishing the two dementias based on volumetric measurements of brain atrophy with MRI has been only partially successful.

鉴别这两种痴呆是以磁共振显示脑萎缩的容积测量为依据的，且仅部分病例能鉴别出来。

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Researchers found that higher levels of physical activity were associated with less brain atrophy, or shrinkage, and less brain damage.

WSJ: Exercise Might Beat Puzzles for Protecting the Aging Brain