A debate over that question in a British scientific journal shows why some observational studies should be taken with a big shaker of salt.

英国一家科学期刊就这个问题展开了一场争论，从中我们可以看出某些观察性研究的结果不可轻信。

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The findings, published on the British Medical Journal website, come after a series of studies have come to similar conclusions.

该研究发表在英国期刊网后，一系列相似的研究也发表了。

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But in 2014 the British Journal of Nutrition published a review of 343 studies that found organic produce on average had significantly higher levels of antioxidants, which help fight disease.

但是在英国营养学杂志发表的包括了343项研究的2014年回顾发现，有机农产品平均来看有显著高水平的抗氧化剂，该抗氧化剂可以帮助抵抗疾病。

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This is a study that came out Friday in a journal called The British Medical Journal and this was a study of studies.

这里有一篇上周五发表于,《英国医学杂志》的综述性研究

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In a review article published in July, the British Medical Journal noted that a series of studies found that distracted patients suffered less from nausea and required fewer painkillers.

ECONOMIST: Monitor

This article, published in the Christmas 2012 issue of the British Medical Journal, reviewed industry reports and medical studies to help guide physicians who may have to answer questions and fill out fitness to fly certificates for the growing ranks of aspiring space travelers.

FORBES: Doc, Am I Fit To Fly Into Space?

An analysis of about 25 studies, published in this week's British Medical Journal, suggest that St.

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