SSS 2009-01-27
时间：2018-12-24 作者：英语课 分类：Scientific American(一)月
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.
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 1 of the National Academy of Sciences, shows that cutting calories actually improves memory in older folks.
Calorie restriction 2 lets lab animals live longer. And these hungry critters tend to be healthier, too: with lower cholesterol 3, better insulin sensitivity, and even slower cognitive 4 decline. But these diets can be draconian 5. And it hasn’t been clear whether they’d offer the same benefits to people.
In this study, scientists asked 50 elderly women to cut the number of calories they consumed by a third. After three months, the researchers found that the dieters were not only slimmer, but they were better than they had been at memorizing lists of words. They also had better insulin levels and fewer markers of inflammation, which suggests that keeping those things under control may help keep the brain fit. It’s one of the cruel ironies 6 of aging: if you want to remember your favorite restaurants, the less you should eat at them.
Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.
- He was released on bail pending committal proceedings. 他交保获释正在候审。
- to initiate legal proceedings against sb 对某人提起诉讼
- The park is open to the public without restriction.这个公园对公众开放，没有任何限制。
- The 30 mph speed restriction applies in all built-up areas.每小时限速30英里适用于所有建筑物聚集区。
- There is cholesterol in the cell of body.人体细胞里有胆固醇。
- They are determining the serum-protein and cholesterol levels.他们正在测定血清蛋白和胆固醇的浓度。
- As children grow older,their cognitive processes become sharper.孩子们越长越大，他们的认知过程变得更为敏锐。
- The cognitive psychologist is like the tinker who wants to know how a clock works.认知心理学者倒很像一个需要通晓钟表如何运转的钟表修理匠。