Why the tears ?

Question

Why is it when people get upset they cry and tears are formed, is there any reason for this chemical reaction.

Answer 1

I've heard that tears of pure grief (death of loved one) can be toxic, hence it would be better to cry than hold all that toxic emotion inside.

It's only hearsay, you'll need a source to confirm.

Answer 2

what about tears of joy?

huh? huh?

Answer 3

When i cry it seems to lesson the stress.

Answer 4

Not sure but they can turn it around with encouraging music (see link and watch right to the end).

Answer 5

Humans are apparently the only species that has learnt to cry

(Crocodile tears are fallacy)

Answer 6

To show vulnerability and to trigger the other's tear glands as well. To cleanse the eyes due to fatigue in both physical and emotionally.