Why do we cry emotional tears?

We produce three kinds of tears: basal tears that keep the eye moist, reflex tears that flush out irritants, and emotional tears triggered by strong feelings. Emotional tears have a slightly different chemical makeup, containing more stress-related hormones, which supports the idea that crying helps the body release tension. Crying is also a powerful social signal, communicating distress and prompting comfort and connection from others. It is considered a uniquely human emotional behaviour.