这么吃，能提高记忆力｜科学60秒
你可能已经注意到，随着年龄增长，你会开始变得健忘：忘了把耳机放哪了，或者上一秒在想的事下一秒就想不起来了。如果你厌倦了这些“老年时刻”，不如放下手里的小饼干：一项发表在《美国科学院院刊》（PNAS）上的研究显示，减少卡路里的摄入实际上可以改善老年人的记忆力。热量限制能让实验室动物寿命更长，这些饥饿的小动物们往往也更健康：胆固醇更低，胰岛素敏感性更好，甚至认知衰退也更慢。但这些饮食可能过于苛刻，是否能给人类带来同样的益处也尚未可知。You may have noticed that as you get older, you start forgetting more stuff: like, where you left your glasses, or the names of your children. Well, if you’re fed up with those senior moments, put down that pastrami sandwich. Because a new study, published in the January 27th issue of the Proceedings of the National Academy of Sciences, shows that cutting calories actually improves memory in older folks.
Calorie restriction lets lab animals live longer. And these hungry critters tend to be healthier, too: with lower cholesterol, better insulin sensitivity, and even slower cognitive decline. But these diets can be draconian. And it hasn’t been clear whether they’d offer the same benefits to people.
In this study, scientists asked 50...[full transcript]
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