Dean Rohrer

有机农业的神话

斯坦福——从食品、香烟到护肤秘方,有机产品正大行其道,据报道目前仅有机食品每年的全球市场就超过600亿美元。欧盟委员会似乎也赞同有机爱好者们的观点,“适合自然、也适合你”是欧盟的官方宣传。但这两方面都缺乏令人信服的证据。

2012年对240项研究结果的汇总分析显示:一般而言,有机水果和蔬菜并不比便宜的水果蔬菜更有营养,它们被大肠杆菌或沙门氏菌等致病菌污染的可能性也没有降低。就连研究人员都对这一结果感到惊讶。参与这项研究的德娜·布拉瓦塔说,“项目开始时,我们都认为很可能找到有机食品优于传统食品的证据。”

很多人选购有机食品是为了避免有害的农药残留。但这样做的理由并不充分。虽然非有机水果蔬菜农药残留较高,但99%以上并没有超过监管机构设定的保守的安全阈值。

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