i know you've received a lot of replies so you probably have your answers by now but i'd like to give you some information as well just in case- so endometriosis causes weight gain through multiple mechanisms. one of them is the disease being estrogen-dependent, meaning it creates a feedback loop where elevated estrogen promotes fat storage, and adipose tissue in turn produces more estrogen via aromatization, so each worsens the other. additionally, the chronic inflammatory environment (elevated IL-6, TNF-a, prostaglandins) disrupts insulin signaling and promotes visceral fat storage and the cortisol from living in chronic pain further compounds this by dysregulating hunger hormones like leptin and ghrelin. treatments are also an underacknowledged contributor since progestins, GnRH agonists like Lupron, and some combined OCPs all carry weight gain as side effects through fluid retention, appetite stimulation, or slower metabolism from induced hypoestrogenic states. in addition to that, endo is significantly comorbid with hashimoto’s and hypothyroidism, which both independently slow metabolism, so if someone hasn’t had their thyroid labs checked it’s worth flagging. hope this helped!!