The Pros and Cons of Hormonal IUDs (Mirena, Kyleena, and Skyla)

Mirena hormonal IUDHormonal IUDs are different from all types of hormonal birth control in that they do not suppress ovulation and therefore can permit natural cycling.

Other benefits of hormonal IUDs are that they can dramatically decrease menstrual flow and relieve symptoms of endometriosis.

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Ovulation Is the Main Event of the Menstrual Cycle

Anovulatory cycles and pill bleeds.A menstrual cycle is, by definition, an ovulatory cycle in which ovulation is the main event and progesterone is made.

Any other kind of bleed is either an anovulatory bleed or a pill-bleed — neither of which are real menstrual cycles. Ovulatory cycles are the only way to make progesterone which is important for general health, not just for making a baby.  

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