What are all causes of colostrum leakage?

Colostrum leakage can occur due to several factors, primarily related to hormonal changes during pregnancy and breastfeeding. It is often triggered by the body's preparation for lactation as estrogen and progesterone levels rise. Other causes may include physical stimulation of the breasts, such as during sexual arousal or breast exams, as well as certain medical conditions like galactorrhea or hormonal imbalances. Additionally, some women may experience leakage even before childbirth, while others may not have any leakage at all.