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。
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。
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。
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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