The process for updating the US national dietary guidelines should be comprehensively redesigned, with more rigorous evaluation of the evidence and greater transparency, concludes a new report from the National Academies of Sciences, Engineering and Medicine.1 The Dietary Guidelines for Americans , issued every five years, are hugely influential in driving nutrition policy in the United States and worldwide. However, they have been heavily criticized in recent years, and concerns have been raised in the US Congress about their trustworthiness. In 2015 The BMJ ran a highly critical review saying that the expert report underpinning the dietary guidelines failed to take account of all the relevant scientific evidence.2 In response, more than 180 researchers, including all the members of the 2015 guideline committee, signed a letter calling on The BMJ to retract the article. After a formal post-publication review The BMJ decided against retraction.3 In response to widespread criticism, Congress asked the National Academies of Sciences, Engineering and Medicine to evaluate the entire process used to develop …

中文翻译：

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重大报告支持对美国饮食指南程序的全面改革

美国国家科学，工程和医学研究院的最新报告总结道，应全面重新设计更新美国国家饮食指南的过程，对证据进行更严格的评估，并提高透明度。1《美国饮食指南》每5发行一次年，在美国和全球范围内对推动营养政策产生了巨大影响。但是，近年来，它们受到了严厉的批评，美国国会对此也提出了担忧。2015年，英国医学杂志（BMJ）进行了高度严格的审查，称作为膳食指南基础的专家报告未考虑所有相关的科学证据。2为此，包括2015年指南委员会的所有成员在内的180多名研究人员 签署了一封信，呼吁BMJ撤回该文章。经过正式的发布后审查，BMJ决定不撤稿。3为了回应广泛的批评，国会要求美国国家科学院，工程学和医学研究院评估用于开发……的整个过程。