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Can Birth Control Cause Infertility?

doctor robby setton shady grove fertility brooklyn
Medical Contribution by Robert Setton, M.D.

Some women diagnosed with infertility look back at the years they spent preventing pregnancy with hormonal birth control and question, “Can birth control cause infertility?”

Can birth control cause infertility?

Contrary to a popular myth, the pill has no negative impact on fertility. However, it is easy to understand why there are myths about birth control pills causing infertility as some women experience a delay in resuming ovulation and menses following prolonged birth control use. For some women it may take months after stopping birth control for their menses to return.

“When you’re on the pill, you essentially have an artificial menstrual cycle. That artificial cycle can mask an underlying ovulatory problem,” explains Robert Setton, M.D. (Manhattan, NY).  “Changes in your body, like fluctuations in body fat content, or stress that could affect a woman’s cycle, are often masked by birth control pills,” Setton adds.

What type of menstrual cycle irregularities might be masked by birth control pills?

One of the benefits of taking the pill is a predictable menstrual cycle. Women often know exactly when their body will start to menstruate. However, if you’re on the pill, it may mask irregularities in your menstrual cycle that could make conception more difficult once off the pill. Irregularities may include a shorter than normal, longer than normal, or absent cycle. Birth control pills may even mask prolonged menstrual bleeding, which is bleeding that lasts longer than 5 to 7 days.

How do birth control pills work?

Most birth control pills use synthetic hormones that are similar to those produced in the female body—estrogen and progesterone. These hormones work together to prevent ovulation by signaling to the brain to decrease production and release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). FSH and LH are vital in the maturation and ovulation of eggs during a typical menstrual cycle.

The estrogen and progesterone from the birth control pills also cause the uterine lining to become inhospitable for embryo implantation and causing the cervical mucus to be too hostile of an environment for sperm to swim toward the cervix. So the pills actually work in multiple ways simultaneously to achieve contraception.

When should I stop taking birth control pills if I am trying to conceive?

Whether you have been on the pill for 6 months or 10 years, many women resume a normal menstrual cycle within 1 to 2 months after stopping birth control pills. Once you go off the pill, your body should go back to ovulating. If your menstrual cycle doesn’t resume within 2 months of stopping birth control, contact your Gynecologist.

If a woman under the age of 35 has been unable to conceive after 1 year after discontinuing use of birth control, or if a woman 35 years or older has been trying to conceive for 6 months without getting pregnant, she should consult a fertility specialist.

Why do infertility patients need to take birth control pills?

It may seem counterintuitive but birth control pills are widely used during infertility treatment. For example, before starting in vitro fertilization (IVF), many women will take birth control pills to suppress their ovaries.
“When you’re doing IVF, you want to recruit a lot of follicles (the fluid sacs in the ovaries that contain the eggs). If you don’t have that suppression of your ovaries, some follicles may already start to grow before you’re ready to start injections, says Setton. “The pill provides the necessary synchronization among follicle growth, ultimately  increasing the number of mature eggs,” Setton adds.

Shady Grove Fertility physicians also uses the pill to time the start of a treatment cycle, “because we’d like to know, particularly if you don’t have regular periods, when we need to start your treatment cycle,” explains Setton.

Why do women who are freezing their eggs to preserve their future fertility need to take birth control pills?

Similar to during infertility treatment, women who want to freeze their eggs will use birth control pills to help time the start of their cycle and help follicles grow at the same rate. Birth control pills can also be used to manipulate your cycle based on when you want the egg retrieval to take place.

For women who have been on birth control pills for many years and want to freeze their eggs, in some cases it may be recommended that you stop the pill for a short period of time prior to undergoing an egg freezing cycle. In these cases, the ovaries may be over-suppressed from the prolonged pill use and relieving the ovaries of that suppression allows for a more robust response to injections.

Follow this link to learn more about freezing your eggs.

Editor’s note: This blog was originally published in August 2016, and has been updated for accuracy and comprehensiveness as of February 2021.

Schedule an Appointment

Can birth control cause infertility? No, but if you are having trouble conceiving or interested in learning more, you can schedule a virtual consultation with an SGF physician by calling our New Patient Center at 1-888-761-1967 or submitting this brief form.

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