
22/08/2025
No Tears Left to Cry?
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We produce three kinds of tears:
Basal tears: These are constantly being released to keep our eyes moist and healthy.
Reflex tears: Their job is to flush out irritants and protect our eyes.
Emotional tears: These are the ones that show up when we feel joy, sadness, frustration, or relief.
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So, how is crying good for you?
Tears are antibacterial: Thanks to lysozyme (an enzyme found in tears), your body can fend off bacteria and keep your eyes clean.
They help you see more clearly: Basal tears act like a natural moisturiser for your eyeballs. According to the National Eye Institute (https://www.nei.nih.gov/), without them, your eyes dry out, and dry eyes can blur your vision.
Crying calms the nervous system: A 2014 study showed that crying activates the parasympathetic nervous system, essentially your body’s natural calming mechanism.
Tears invite connection: Crying is considered an attachment behaviour - it signals to others that we need support.
It relieves physical and emotional pain: When we cry emotional tears, our body releases endorphins and oxytocin - two natural chemicals that help reduce pain and boost feelings of calm and comfort.
It can lift your mood: Those same chemicals - oxytocin and endorphins - can also help improve your overall mood.
Crying may help reduce stress: Some researchers believe emotional tears help flush stress hormones like cortisol from the body, essentially letting you “cry it out” in a very real, physiological way.
It might even help you sleep: Many of us have experienced that after-cry fatigue. There’s some evidence (mainly from studies on babies) that crying promotes better sleep. While the adult science isn’t quite there yet, plenty of us know the emotional reboot that comes after a big cry and a deep nap.
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While crying is totally normal and even helpful, there are times when it can point to something deeper. If you’re crying often, or your tears come with feelings of hopelessness, exhaustion, or numbness, it’s worth checking in with your GP. Support is available - https://www.mind.org.uk/information-support/helplines/
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