Does birth control prevent the proliferation of endo? ⬇️ To put it simply…no, but the proliferation of endometriosis is far more complicated than this. Let’s start by talking about how Hormonal birth control (HBC) actually works… HBC takes over the natural production of estrogen and progesterone by preventing ovulation. No ovulation = no cyclical changes in hormones and no period (like a real period, which is a naturally ‘inflammatory’ event). ✅ A withdrawal bleed or no bleed at all means less inflammation! Estrogen also plays a role in forming blood vessels & a nerve supply for endometriotic lesions, so in a sense, if you suppress estrogen you can influence proliferation of endo… However, this is not permanent & it comes at a cost (ie. bone decay, increased risk of heart disease,