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How Does The Pill Prevent Your Ovulation Day?


Updated April 23, 2012

Question: How Does The Pill Prevent Your Ovulation Day?

Hormonal birth control comes in two forms:

1. One type supplies a steady level of both progestin and estrogen every day. These methods include:

2. The other type only supplies a steady level of progestin each day. These methods include:

In order for ovulation to occur, there needs to be a surge of the luteinizing hormone (LH) to trigger the release of the egg. So, the steady release of hormones actually prevents your ovulation day. The presence of these hormones results in:

So to Recap:

  • The FSH signals the growth of egg follicles in the ovaries
  • The LH triggers your ovulation day
  • The ovary becomes relatively inactive without these hormones present

The Result:

  • Your ovulation day does not occur because no mature egg is produced or released.
Hormonal birth control will keep your reproductive system in the same phase of your reproductive (menstrual) cycle on a continuous basis -- all because hormonal contraceptives will continuously cause your cycle to skip the release of GnRH.

The Bottom Line:

It basically comes down to the notion that hormonal birth control works by suppressing the two key hormones that are involved in your ovulation day: FSH and LH.

These two hormones begin to be produced when the body notices a shortage of estrogen and progesterone. Hormonal birth control provides just enough of these synthetic hormones to prevent the stimulation of FSH and LH production. Keeping estrogen and progesterone levels constant produces constant levels of FSH and LH, which keeps the egg from ripening and maturing -- thus the egg is never released, so your ovulation day does not occur.

Back to Main Page: Hormonal Birth Control Questions

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