Natural methods of birth control include fertility awareness-based methods, diaphragm, condoms, and the copper IUD or Paragard.
The copper IUD or coil (ParaGard) is a non-hormonal method of birth control. Its main advantage over hormonal methods is that it contains no contraceptive drugs and therefore permits natural, ovulatory cycles.
The hormonal IUD is different from all types of hormonal birth control in that it does not suppress ovulation and therefore can permit natural cycling.
Other benefits of the hormonal IUD are that it dramatically decreases menstrual flow and can relieve symptoms of endometriosis.
Ovarian hormones estrogen and progesterone are beneficial for health. That means natural ovulatory menstrual cycles are beneficial for health because ovulation is how women make hormones.
Does that surprise you? Men make testosterone every day, so you might think women do something similar, but we don’t. Instead, women make hormones as a surge of estradiol leading up to ovulation and an even bigger surge of progesterone after ovulation.