Ovarian hormones estrogen and progesterone are highly beneficial for health. That means that natural ovulatory menstrual cycles are beneficial for health because ovulation is the only way to make ovarian hormones.
Does that surprise you? Men make their valuable testosterone every day, so you might think women would do something similar, but we don’t. Instead, we make our hormones as a surge of estrogen leading up to ovulation and an even bigger surge of progesterone for the two weeks after ovulation.