Estrogen realted gyno (in the case of AAS) is typically when excess testosterone is converted to estradiol which binds to estrogen receptors causing a hormpne imbalance where the estrogen is higher than the androgen.

Prolactin related gyno is caused by high levels of progesterone or prolactin. It is often associated with puffy nipples and milky discharge as it is what causes women to lactate. In order for this to happen higher estrogen levels must be present to work synergistacally with prolactin to cause gyno and lactation.

Keep your E2 levels in check through the use of an AI!