While there isn't one single hormone directly responsible for causing tears, prolactin is often cited as a contributing factor to crying, particularly in women. This hormone, present in higher levels in women, may promote crying, while testosterone, typically present in higher levels in men, may inhibit it.
It's important to note that crying is a complex process influenced by various factors, including emotions, stress, and even physical stimuli. While prolactin might play a role in triggering tears, it's not the sole determinant.
