记忆力的好坏不是年龄决定

　　To see whether the same effects can be induced in humans, Witte's team divided 50 normal- to overweight individuals whose average age was 60 years into three groups. One group restricted by up to 30 percent the amount of calories they consumed; a second group increased their consumption of unsaturated fatty acids by up to 20 percent; and a third group, serving as the control group, made no changes.

　　为了证明在人类中能否产生一样的效果，Witte的小组将50个平均年龄在60岁的从正常到超重的人分成了三组。一组限制了他们平时所消耗的热量的30%；第二组增加他们所消耗的不饱和脂肪酸的20%；而第三组，作为参照，不需要做任何改变。

　　According to the investigators, the calorie-restricted group saw a significant 20 percent average increase in verbal memory scores after 3 months. In contrast, no significant changes in memory performance emerged in the two other groups.

　　根据这个调查，三个月后，热量受限制的那组在非文字记忆测试中得到了分数高出20%的可观结果。相比之下，在另外两组却没有明显的改变。