Two ways you can tell someone is sick just by looking at them

When you’re sick, it’s written all over your face. That’s the conclusion of a new study in the Proceedings of the Royal Society B, which finds that sick people share facial features—pale skin, swollen faces, droopy eyelids, and looking tired—that reveal they might be contagious.

Read more: http://www.sciencemag.org/news/2018/01/two-ways-you-can-tell-someone-sick-just-looking-them

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