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How simple advice can sometimes be wrong—the case of ‘healthy diets’ 

How simple advice can sometimes be wrong—the case of ‘healthy diets’
Chapter:
How simple advice can sometimes be wrong—the case of ‘healthy diets’
Author(s):

J. Frank

, R. Jepson

, and A. J. Williams

DOI:
10.1093/med/9780198725862.003.0006
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date: 02 December 2020

In this chapter, the authors examine a specific kind of preventive advice—what (and what not) to eat and drink to stay healthy. While it is tempting to critique the vast majority of this advice purely on the basis that it comes from sources not formally trained in nutritional science or epidemiology, the authors have restricted their discussion to the potential sources of both research error and legitimate scientific disagreement about what nutritional epidemiological evidence says. These pitfalls afflict even dietary guidance that has come from authoritative scientific sources, including peer-reviewed scientific journal articles, books, and official expert panels. By the end of the chapter the reader will be equipped to apply helpful critical appraisal tools to any dietary advice—even that which comes from apparently authoritative sources.

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