"The whole cleansing concept is silly," Elizabeth Applegate, a senior lecturer in the nutrition department at the University of California, Davis, told Slate magazine.

“整个排毒净化理念根本就是无稽之谈。”加州大学戴维斯分校营养学系高级讲师伊丽莎白？艾伯盖特在接受《石板》杂志采访时表示。

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Dr Catherine Hankey, a senior lecturer in nutrition at the University of Glasgow, said research had shown that breakfast "takes the edge off appetite" and that the latest study was an "interesting" insight.

BBC: Skipping breakfast primes the brain to seek out fat

But Dr Ann Walker, senior lecturer in human nutrition at the University of Reading and a qualified medical herbalist, said the findings would make little difference to the average St John's wort user.

BBC: Herbal remedy 'interferes with treatments'