While no single hormone is solely responsible for crying, prolactin plays a significant role in emotional tears. It's a hormone primarily known for its role in milk production during breastfeeding, but research suggests it also influences tear production, particularly in women.
Prolactin levels are typically higher in women than in men, which could explain why women tend to cry more.
Other hormones, like testosterone, are believed to inhibit crying.
While hormones are involved, crying is a complex process influenced by various factors, including emotions, social context, and individual differences.