Humans may use a host of facial cues – visible just hours after an infection starts – to avoid contracting illnesses from others, study indicates
Coughing, sneezing and clutching the stomach might be obvious signs of sickness, but humans can also spot if someone is healthy simply from a glance at their face, new research suggests.
Scientists have found that signs of a person being acutely unwell – such as pale lips, a downward turn of the mouth and droopy eyelids – are visible just hours after an infection begins.
from The Guardian http://ift.tt/2lFzFJq
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