Don_Dickle@lemmy.world to Today I Learned@lemmy.worldEnglish · 4 months agoTIL there are three types of tears: basal, reflex, and psychic. Psychic tears, produced when we're sad, contain leucine enkephalin, a natural painkiller that helps us feel better.en.wikipedia.orgexternal-linkmessage-square20fedilinkarrow-up1285arrow-down15
arrow-up1280arrow-down1external-linkTIL there are three types of tears: basal, reflex, and psychic. Psychic tears, produced when we're sad, contain leucine enkephalin, a natural painkiller that helps us feel better.en.wikipedia.orgDon_Dickle@lemmy.world to Today I Learned@lemmy.worldEnglish · 4 months agomessage-square20fedilink
minus-squareAwesomeLowlander@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up15·4 months agoWhy do we need to excrete the tears before reabsorbing them, instead of just producing and consuming them internally?
minus-squareSparrowRanjitScaur@lemmy.worldlinkfedilinkEnglisharrow-up9·4 months agoMaybe as a social signal for other humans.
minus-squaredelirious_owl@discuss.onlinelinkfedilinkEnglisharrow-up8·edit-24 months agoAnd that, children, is how humans began to produce internal heroin in the dawn of the geneic era in the 2030s
minus-squareAwesomeLowlander@lemmy.dbzer0.comlinkfedilinkEnglisharrow-up4·4 months agoWe already do, it’s called dopamine
Why do we need to excrete the tears before reabsorbing them, instead of just producing and consuming them internally?
Maybe as a social signal for other humans.
And that, children, is how humans began to produce internal heroin in the dawn of the geneic era in the 2030s
We already do, it’s called dopamine