Crying Improves Your Mood Chemically

Not all tears are created equal. The human body actually produces three distinct types: basal tears that constantly lubricate our eyes, reflex tears that wash away irritants like onion fumes or dust, and emotional (or psychic) tears. It is this third category, triggered by feelings of joy, sadness, or stress, that holds a unique biochemical composition. While reflex tears are about 98% water, emotional tears are packed with proteins and hormones that tell a much deeper story about our internal state.

This chemical difference is the key to why a good cry can feel so restorative. Scientific analysis has shown that emotional tears contain significantly higher concentrations of stress-related substances, including the hormone prolactin and adrenocorticotropic hormone (ACTH), a key indicator of stress. They also contain leucine enkephalin, an endorphin that acts as a natural painkiller. This suggests that crying is not just a signal of distress but a literal excretory process, a physical mechanism for flushing these compounds from the body and lightening our biochemical load.

Beyond this chemical cleanse, the physical act of crying can also stimulate the parasympathetic nervous system, which helps the body rest and digest. The deep, sometimes shuddering breaths we take during a sob can lower our heart rate and bring a sense of calm. In this way, crying serves as a powerful, multi-faceted self-soothing mechanism, combining chemical release, physiological regulation, and social signaling to help us recover from emotional distress.