It does appear that it's harder to lose the weight below the waist, but there is some mixed research on that as well.

但腰部以下的脂肪似乎更难减掉,关于这点也有一些相应的研究

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Experts say hormonal contraceptives are relatively safe, but there is some mixed scientific research on the topic.

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Those questioned in the research had mixed views on whether the government should subsidise broadband.

BBC: Britons say broadband 'essential'

But these sorts of problems are endemic when scientific research is mixed up with a regulatory agenda.

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