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Are all tears salty? Are tears caused by a foreign body in the eye exactly the same as tears caused by sorrow?
asked in Human body, tears
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| jacquesdor answers: Yes and no!!
The composition of tears is a complicated mix of chemicals and - or substances. The saltiness is similar to the saltiness of blood plasma.
Emotional tears are a different mixture - it surprised me to see there is a high proprtion of a natural pain killing hormone present. So they are right to say a good cry can make us feel better.
There is a lot of information about the different types of tears on this link.
http://en.wikipedia.org/wiki/Tears 3 years ago / reply
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