translation.en: Twenty percent of all the glucose in your body is used by the brain, and as you go from being normal to having mild cognitive impairment, which is a precursor for Alzheimer's, all the way to Alzheimer's disease, then there are areas of the brain that stop using glucose.
translation.zh: 人体总量百分之二十的葡萄糖用在脑部， 从正常的脑部 到轻微的认知损伤， 再发展成为老年痴呆症， 脑部有些区域停止利用葡萄糖。