Could you tell me whether "Could emulsifiers be behind some of the obesity trend?" can be paraphrased into "Could emulsifiers be partially behind the obesity trend?"? Thanks in advance!
Could emulsifiers cause the same health consequences in humans and be behind some of the obesity trend?
More or less. "behind some of the obesity trend" could be perceived as meaning "completely (or at least largely) responsible for certain cases of obesity", whereas "partially behind the obesity trend" could be perceived as meaning "partly responsible for many cases of obesity". However, this distinction is not clear-cut, and it is not clear that it was intended in the sentence you quote.
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