2024/10/18 英语每日一段

Scientists have long known a fairly reliable way to extend life span in rodents and other lab animals: Reduce the amount of calories they eat by 10 percent to 40 percent.

科学家们早就知道一种相当可靠的方式来延长啮齿类和其他实验室动物的寿命，把他们摄入的卡路里数量减少10%或40%。

This strategy, known as caloric restriction, has been shown to increase the life span of various organisms and reduce their rate of cancer and other age-related ailments. Whether it can do the same in people has been an open question. But an intriguing new study suggests that in young and middle-aged adults, chronically restricting calorie intake can have an impact on their health.

这种被称作卡路里限制的策略已经被证实可延长各种生物的寿命，并降低他们身患癌症和其他年龄相关的疾病的几率。是否他能对人类起同样的作用是开放性的问题（尚无定论），但是一项饶有趣味的新研究表明，长期限制青壮年人和中年人的会对他们的健康产生影响。

In the new study, which was funded by the National Institutes of Health and published this month in the Lancet Diabetes & Endocrinology, researchers looked at a group of 143 healthy men and women who ranged in age from 21 to 50. They were instructed to practice caloric restriction for two years. They could eat the foods they wanted so long as they cut back on the total amount of food they ate, with the aim of cutting the calories they consumed by 25 percent.

这项研究由nih出资并发表在本月的《lbe》，研究人员对一组143个健康的男性和女性，平均年龄在21-50的人进行了观察，他们被指导着进行了为其两年的卡路里限制，他们可以食用自己想要的食物，但是他们要减少他们吃的食物的总量，目标是使他们摄入的热量减少25%。

Many did not achieve that goal. On average, the dieters managed to slash about 12 percent of their total calories, or roughly 300 calories a day, the amount in a large bagel, a few chocolate chip cookies or a small Starbucks Mocha Frappuccino. But the group saw many of their cardiovascular and metabolic health markers improve, even though they were already in the normal range.

很多人可能没有达到这一目标。平均而言，节食者得以将总热量减少了12%，大致相当于每天300卡路里，这是一颗大果，一点巧克力曲奇或者是一小杯星巴克的热量，但是在这组人中，他们中的很多心血管和新陈代谢的健康指标都得到了改善和新陈代谢健康指标都得到了改善，尽管他们原本已在正常范围内。

They lost weight and body fat. Their cholesterol levels improved, their blood pressure fell slightly, and they had better blood sugar control and less inflammation. At the same time, a control group of 75 healthy people who did not practice caloric restriction saw no improvements in any of these markers.

他们的体重和体脂均有下降。他们的胆固醇水平有所改善，血压略有下降，血糖控制情况好转，炎症发作也减少。与此同时，未实行卡路里限制的75名对照组健康人士没有看到这些指标的改善

原文地址：https://blog.csdn.net/m0_63504902/article/details/143058764

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