What is it, she asks me, why do people cry? Why do we cry when we’re happy and when we’re sad or hurt? I tell her what I know or think I know: that the body does not distinguish between emotional and physical pain; the muscles around the lachrymal glands receive a message from the brain, then tighten and squeeze out tears. Tears contain high levels of the hormone ACTH and prolactin, endorphins (which we know are mood-altering and pain-killing), as well as thirty times more manganese than is found in blood, suggesting that human tears can concentrate and remove harmful substances from the body. Prolactin in humans controls fluid balance; by the age of eighteen women have 60 percent more prolactin than men, which may explain why women seem to cry more often. I tell her that sadness–like happiness–is an intense feeling of being alive, of having essence. I try to explain to her my own nonscientific theory: that crying is about weight or heft, that we cry when our bodies feel too light or too heavy to bear or hold on to language.
What is it, she asks me, why do people cry? Why do we cry when we’re happy and when we’re sad or hurt? I tell her what I know or think I know: that the body does not distinguish between emotional and physical pain; the muscles around the lachrymal glands receive a message from the brain, then tighten and squeeze out tears. Tears contain high levels of the hormone ACTH and prolactin, endorphins (which we know are mood-altering and pain-killing), as well as thirty times more manganese than is found in blood, suggesting that human tears can concentrate and remove harmful substances from the body. Prolactin in humans controls fluid balance; by the age of eighteen women have 60 percent more prolactin than men, which may explain why women seem to cry more often. I tell her that sadness–like happiness–is an intense feeling of being alive, of having essence. I try to explain to her my own nonscientific theory: that crying is about weight or heft, that we cry when our bodies feel too light or too heavy to bear or hold on to language.
