Why are tears so salty?

Question

Why are tears so salty?

Answer 1

They contain sodium chloride.

Answer 2

so they don't freeze! really, seriously. salty water doesn't freeze as easily.

Answer 3

The correct answer is that tears are hypotonic, i.e., they have a lower salt concentration than blood.  However, when they come onto the face, some of the water evaporates, concentrating the salt.

Answer 4

Actually, all the fluids of your body are at least a little bit salty. All of them have some salts dissolved in them and always a little of the commonest salt, sodium chloride. (That’s the one that tastes saltiest.) Your blood contains a little less than 1 percent sodium chloride and your tears probably contain almost that much. Just for comparison, seawater contains about 3 percent sodium chloride.

You are always losing some salt in your urine, so you need a continued intake of salt in your diet. Generally that’s not much of a problem since there is some salt in almost all of the foods you eat. Salt is a common material in all animals and plants.

Answer 5

its not salt that you taste its several proteins and dust.