Yes, a woman can be sterile, meaning she is unable to conceive a child. This can be permanent or potentially treatable depending on the cause. About 1 in 6 people globally are affected by infertility, with rates similar across high-income and low-income countries. Some causes of female sterility are irreversible, while others respond well to medical intervention.
The distinction between sterility and infertility matters. Sterility refers to the inability to conceive at all, while infertility more broadly includes difficulty maintaining a viable pregnancy. In medical practice, a woman is typically evaluated for sterility after one year of regular unprotected sex without conception.
Conditions Present From Birth
Some women are born without the anatomy needed to become pregnant. The most well-known example is a condition called MRKH syndrome, where a girl is born without a uterus despite having normal ovaries and normal female chromosomes. It affects roughly 1 in 4,500 to 5,000 females. Because the uterus is completely absent, natural pregnancy is not possible. Women with this condition still have functioning ovaries, which means they produce normal hormones and go through puberty, but they will not menstruate or be able to carry a pregnancy.
MRKH comes in two forms. In the simpler type, the uterus alone is missing while other organs develop normally. In the more complex type, the fallopian tubes, ovaries, or urinary system may also be affected. Either way, the absence of a uterus results in absolute sterility. For women with this condition, gestational surrogacy using their own eggs is sometimes an option, and uterine transplant is an emerging surgical possibility at a small number of centers worldwide.
Damage to the Fallopian Tubes
The fallopian tubes are where an egg meets sperm. When both tubes are completely blocked or destroyed, conception cannot happen naturally. One of the most common causes of this damage is pelvic inflammatory disease, a bacterial infection that spreads to the reproductive organs, usually from untreated sexually transmitted infections like chlamydia or gonorrhea. The infection causes tissue inside the tubes to scar, which can block them completely.
Severe endometriosis, where tissue similar to the uterine lining grows outside the uterus, can also cause adhesions that distort or obstruct the tubes. Previous pelvic surgery, a ruptured appendix, or abdominal infections can produce similar scarring. When both tubes are blocked, it’s a form of sterility, though in vitro fertilization (IVF) can bypass the tubes entirely by fertilizing eggs outside the body.
Premature Ovarian Insufficiency
Some women’s ovaries stop functioning well before the typical age of menopause. This condition, called premature ovarian insufficiency, means the ovaries no longer release eggs or produce adequate hormones, sometimes in a woman’s 20s or 30s. It’s diagnosed when a specific hormone (FSH) is elevated above 25 to 40 IU/L on two separate blood tests taken four weeks apart, combined with absent or irregular periods for at least four months.
The causes vary widely. Autoimmune disorders, genetic conditions like Turner syndrome, and certain infections can all trigger it. In some cases, no clear cause is ever found. Unlike menopause, premature ovarian insufficiency can occasionally be intermittent, with ovarian function flickering on and off unpredictably. About 5 to 10 percent of women with this diagnosis do conceive spontaneously, so it isn’t always absolute sterility, but for most, egg donation or embryo donation becomes the path to pregnancy.
Cancer Treatment and Ovarian Damage
Chemotherapy drugs can permanently damage the ovaries, and the risk depends heavily on the type of drug and the woman’s age at treatment. Alkylating agents carry a 42 percent risk of ovarian failure. Platinum-based drugs cause permanent damage in about half of patients. Taxanes carry a 57 percent risk. For a class of drugs called anthracyclines, the numbers shift dramatically with age: women under 40 face a 10 to 34 percent risk, while women aged 40 to 49 face a 98 percent risk.
Radiation therapy directed at or near the pelvis can also destroy ovarian tissue. For women who know they’ll undergo these treatments, fertility preservation options like egg or embryo freezing before treatment begins can provide a path to biological children later. Ovarian tissue freezing is another option, though it’s less widely available.
Surgical Causes
Certain surgeries make pregnancy permanently impossible. A hysterectomy, the removal of the uterus, is the most definitive. After this surgery, a woman will no longer menstruate or be able to get pregnant. The most common type removes the entire uterus and cervix. A more extensive version, performed for cancer, removes the uterus, cervix, and upper part of the vagina. When the ovaries are also removed (oophorectomy), it additionally triggers immediate menopause.
Tubal ligation, commonly called “getting your tubes tied,” is intended as permanent sterilization, though reversal surgery is sometimes possible depending on how the procedure was done. Bilateral removal of the fallopian tubes (salpingectomy) is irreversible, though IVF could still be used if the uterus and ovaries remain.
Menopause as Natural Sterility
Every woman eventually becomes sterile through menopause, the permanent end of menstruation. The average age is 51, but the transition begins years earlier. During perimenopause, the ovaries gradually run out of viable eggs. Periods first become more frequent as the menstrual cycle shortens, then become irregular, then stop altogether. Twelve consecutive months without a period marks the official onset of menopause.
Fertility drops significantly well before that point. During the late transition phase, which lasts one to three years before the final period, most cycles no longer release an egg. FSH levels rise above 25 IU/L as the ovaries slow down, eventually climbing above 40 IU/L in early postmenopause. While rare pregnancies have occurred during perimenopause, postmenopausal women cannot conceive with their own eggs.
How Sterility Is Diagnosed
Diagnosing sterility involves piecing together several types of information. Blood tests measuring FSH and anti-Müllerian hormone (AMH) reveal how the ovaries are functioning and how many eggs remain. A low AMH level suggests a diminished egg supply, though no single cutoff has been established as a definitive marker of sterility.
To check whether the fallopian tubes are open, doctors use a hysterosalpingogram, an X-ray procedure where dye is injected through the cervix. If the dye flows freely through both tubes, they’re open. If it stops, there’s a blockage. This test also reveals the shape of the uterine cavity, which can identify structural problems. It’s often combined with pelvic ultrasound or a camera exam of the uterus (hysteroscopy) for a more complete picture. In some cases, a minimally invasive surgical procedure called laparoscopy allows doctors to directly visualize the tubes, ovaries, and surrounding tissue, and potentially treat problems like adhesions or endometriosis at the same time.
When Sterility Is Reversible
Not all sterility is permanent. Blocked fallopian tubes can sometimes be reopened surgically, and IVF bypasses them altogether. Hormonal imbalances that prevent ovulation may respond to medication. Even some cases of premature ovarian insufficiency see spontaneous improvement, though this is uncommon.
True irreversible sterility applies in specific situations: after a hysterectomy, with congenital absence of the uterus, after menopause, or when complete ovarian failure has been confirmed over time. For women in these situations, options like surrogacy, egg or embryo donation, and adoption remain paths to parenthood. The key distinction is whether the underlying cause can be treated or worked around, which is why thorough diagnostic testing matters before anyone is told conception is impossible.