Hello,
What an interesting question. These links are not academic papers, but relevant. Evidently, the composition of tears varies according to the reason why they are being produced.
The first link includes the sentence:
"Emotional tears, for instance, have been found to contain protein-based hormones including the neurotransmitter leucine enkephalin, a natural painkiller that is released when the body is under stress."
https://www.smithsonianmag.com/science-nature/the-microscopic-structures-of-dried-human-tears-180947766/
This has a similar content:
https://www.aao.org/eye-health/tips-prevention/all-about-emotional-tears
Very best wishes,
Mary
It can be different, but not directly caused by the emotion. Grief sometimes change your eating and drinking habits. The volume of tears also influences the composition.
Hello,
What an interesting question. These links are not academic papers, but relevant. Evidently, the composition of tears varies according to the reason why they are being produced.
The first link includes the sentence:
"Emotional tears, for instance, have been found to contain protein-based hormones including the neurotransmitter leucine enkephalin, a natural painkiller that is released when the body is under stress."
https://www.smithsonianmag.com/science-nature/the-microscopic-structures-of-dried-human-tears-180947766/
This has a similar content:
https://www.aao.org/eye-health/tips-prevention/all-about-emotional-tears
Very best wishes,
Mary
It's said that the tears of happiness is more salty than those of sadness, I think that happened because the tears of sadness is flooded copiously, so the more water, the less salt contents. though I don't have a references for this phenomenon.
regards.
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