Why do women need cycles?

Why do women need cycles? What’s the big deal with shutting off the system with birth control or thinking it’s a relief or normal to not have a cycle. Cycles play a pivotal role in stress. (2:06) Dr. Susan Caldwell answers questions on: preparing to get pregnant, carnivore diet’s benefit for hormones, hormone replacement, and does birth control fix low iron?  (24:50) Preparing for Holy Week (40:52)
Resources mentioned :  Dr. Susan Caldwell’s website: https://www.drsusancaldwell.com/   How to Get Pregnant episode: https://omny.fm/shows/trending-with-timmerie-catholic-principles-applied/how-to-get-pregnant-shia-lebeouf-becomes-catholic   Yuka app on scanning food & body products: https://yuka.io/en/   Hormone Repair Manual: https://www.larabriden.com/hormone-repair-manual/   Episode on how the Carnivore Diet treats PCOS: https://relevantradio.com/2025/02/depression-carnivore-fertility/    Significance of Holy Thursday with Fr. Robert Spitzer  https://omny.fm/shows/trending-with-timmerie-catholic-principles-applied/god-s-love-for-us