吃什么才健康其实大家都是靠猜_BEC初级作文

吃什么才健康其实大家都是靠猜

本期“Retro Report”的推出，正值联邦政府再次反思其《美国膳食指南》(Dietary Guidelines for Americans)之际。这些每隔五年由华盛顿发布的指南得到了数以百万计的注重饮食者的追捧，并视其为营养模板和饮食圣经，毫无疑问，众多在节假日里胡吃海喝，而后又在新年伊始许愿一定要减肥的人也在其中。

The new guidelines are expected to be issued this month by the Departments of Agriculture and of Health and Human Services, which tend to follow the recommendations of an advisory committee. One likely eye-catcher is a new assessment of cholesterol, long an archvillain. It seems destined for rehabilitation to some degree. Months ago, the advisory committee concluded that the dietary intake of cholesterol (the body produces this waxy, artery-obstructing matter on its own) had no real effect on blood levels of LDL, the so-called bad cholesterol. “Cholesterol,” the committee said, “is not a nutrient of concern for overconsumption.”

预计新指南将在本月由美国卫生和公众服务部(Department of Health and Human Service)和农业部(Department of Agriculture)发布。这些指南通常都会遵循顾问委员会的建议。其中，一项关于胆固醇的新评估很可能将十分引人注目。长期以来，胆固醇一直被视为洪水猛兽，而该评估可以说在一定程度上为它平了反。几个月前，该顾问委员会得出结论，从膳食中摄取胆固醇（人体自己也会产生这种会阻塞动脉的蜡状物）对LDL（低密度脂蛋白胆固醇），也就是所谓的“坏胆固醇”的血液浓度没有实质影响。该委员会称：“我们无需担心过度摄取胆固醇。”