The Harvard Health Letter says if you use them for a short time and in recommended amounts, probably not.

哈佛健康通讯称，如果你只是在推荐剂量内短期使用，可能不会使你变蓝。

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The short answer is no, and there may be some serious and strange side effects, reports the August 2007 issue of the Harvard Health Letter.

答案是没有，而且它可能还会有一些严重及奇怪的副作用。

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According to a recent report in the Harvard Health Letter, simple adjustments in the viewing angle can make us feel better as we spend hours reading e-books and working on our devices.

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Miller, the psychiatrist at Beth Israel Deaconess Medical Center -- who is also editor-in-chief of the Harvard Mental Health Letter -- seems to not care about labels.

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