Do emotional or pain-induced tears differ?

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Offline thedoc

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Do emotional or pain-induced tears differ?
« on: 23/06/2014 20:30:01 »
Sameera asked the Naked Scientists:
   
Is it possible to test tears and deduce if they are related to physical pain or emotion, if so what is the difference between the two?
Thanks :)


What do you think?
« Last Edit: 23/06/2014 20:30:01 by _system »