芝加哥西北大学的费利斯博士说：“当人们睡眠不足时，他们体内的压力荷尔蒙水平会升高，这会降低免疫功能。”

"When people are sleep deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function." says Doctor Felice of Northwestern University in Chicago.

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研究结果为专业人士和家长提供了一个明确的信息：当孩子在学习和注意力方面出现问题时，睡眠问题需被纳入考量。

The results provide professionals and parents with a clear message: when a child is having learning and attention problems, the issue of sleep has to be taken into consideration.

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因此，研究结果为专业人士和家长提供了一个明确的信息：当孩子在学习和注意力方面出现问题时，必须考虑睡眠问题。

So the results provide professionals and parents with a clear message: when a child is having learning and attention problems, the issue of sleep has to be taken into consideration.

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