Not being able to have children is more common than most people realize. About 1 in 8 women of reproductive age in the U.S. have difficulty getting or staying pregnant, and roughly 8.5% of married women meet the clinical definition of infertile. If you’re in this situation, you’re far from alone, and the reasons behind it range from straightforward hormonal issues to unexplained causes that frustrate even specialists.
How Infertility Is Defined
Infertility isn’t diagnosed after a single missed month or even several. For women under 35, the clinical threshold is 12 months of regular, unprotected sex without a pregnancy. If you’re between 35 and 40, that window shortens to six months. Women over 40, or anyone with a known risk factor like a history of pelvic inflammatory disease or ectopic pregnancy, should be evaluated right away.
It’s also worth knowing that infertility doesn’t only affect people who have never been pregnant. Secondary infertility, where someone who has had a previous pregnancy can’t conceive again, actually accounts for more than half of infertility cases in many populations. In one large hospital-based study, 56% of women seeking fertility help had been pregnant before. Having one child is no guarantee that conceiving another will come easily.
Why It Happens
Infertility splits roughly into three categories: conditions affecting the woman, conditions affecting the man, and cases where both partners contribute or no clear cause is found.
Female Factors
Ovulation problems are the most common reason women have trouble conceiving. Polycystic ovary syndrome (PCOS), a hormonal condition that disrupts regular egg release, is a leading cause. Endometriosis, where tissue similar to the uterine lining grows in places it shouldn’t, can interfere with how the ovaries, fallopian tubes, and uterus function. Blocked or damaged fallopian tubes, often from past infections or surgery, physically prevent egg and sperm from meeting. Age plays a major role too: egg quality and quantity decline steadily after 30 and drop more sharply after 35.
Male Factors
Male infertility contributes to roughly half of all cases, yet it gets far less attention. Enlarged veins in the scrotum (varicocele) are one of the most treatable causes, affecting sperm quality and production. Blockages in the reproductive tract, genetic conditions like cystic fibrosis, low sperm count, and poor sperm motility all reduce the chances of conception. Lifestyle factors like excessive heat exposure, smoking, and heavy alcohol use can also impair sperm health.
Unexplained Infertility
In about 15% to 30% of couples, every test comes back normal and doctors can’t pinpoint a specific cause. This is one of the most frustrating diagnoses to receive, but it doesn’t mean nothing can be done. Many couples with unexplained infertility still respond to treatment.
What Testing Looks Like
A fertility workup typically involves both partners. For women, it usually starts with blood tests early in the menstrual cycle to check hormone levels that control ovulation, along with pituitary hormones involved in reproduction. A pelvic ultrasound examines the uterus and ovaries for structural problems. Sometimes a saline-infusion sonogram provides a more detailed look inside the uterus to spot polyps, fibroids, or other abnormalities a regular ultrasound might miss.
For men, the process often begins with a semen analysis, where a lab evaluates sperm count, shape, and movement. Blood tests can check testosterone and other hormone levels. In rarer cases, genetic testing or a small tissue sample from the testicle may be needed to look for blockages or other structural issues. Most of these tests are completed within one to two menstrual cycles, so you generally have answers within a couple of months.
Treatment Options and What They Cost
Treatment depends entirely on the cause. Simpler interventions like medication to stimulate ovulation or procedures to clear blocked tubes work for many couples. When those approaches aren’t enough, assisted reproductive technology becomes the next step.
IVF is the most well-known fertility treatment, and it’s also the most expensive. A single cycle, including medications and the embryo transfer, typically costs between $15,000 and $30,000. The injectable hormones alone run $3,000 to $8,000 per cycle. If you use frozen embryos from a previous cycle, a transfer costs $3,000 to $6,000. Many people need more than one cycle.
Success rates vary significantly by age. National data from 2022 shows that for women under 35 using their own eggs, the live birth rate per new patient is 68.4%. That drops to 57.8% for women 35 to 37, 42.9% for ages 38 to 40, 23.8% for ages 41 to 42, and just 8% for women over 42. These numbers represent cumulative outcomes across all cycles a patient undergoes, not just a single attempt.
For a single egg retrieval cycle, the live birth rates are lower: 53.5% under 35, 39.8% for ages 35 to 37, 25.6% for 38 to 40, 13% for 41 to 42, and 4.5% over 42. Age is the single strongest predictor of IVF success.
When Pregnancy Isn’t Possible
For some people, carrying a pregnancy isn’t an option due to medical conditions, repeated treatment failures, or the absence of a uterus. Gestational surrogacy, where another person carries an embryo created from one or both partners’ genetic material, has a success rate of about 75% per attempt. Once the surrogate is confirmed pregnant, the chance of a successful delivery rises to around 95%. Using donor eggs pushes the live birth rate per transfer to 65% to 70%.
Adoption is another path, and the timelines may be shorter than many people expect. Through an adoption agency, 62% of families are matched with a baby within one year and 82% within two years. Through an adoption attorney, those numbers are slightly higher: 68% matched within a year and 84% within two. Costs, however, are substantial. Agency adoptions range from $25,000 to $60,000, while independent adoptions through an attorney typically run $35,000 to $50,000. Some agencies use sliding-scale fees based on income.
The Emotional Weight of Infertility
The psychological toll of not being able to have children is real and well-documented. Studies estimate that 25% to 60% of people dealing with infertility experience significant psychiatric symptoms, most commonly anxiety and depression. When a treatment cycle fails, about 2 in 10 women report depressive symptoms afterward. Feelings of guilt, emptiness, and grief are extremely common, even in people with no prior history of mental health issues.
This isn’t something you need to push through on your own. Counseling and psychotherapy designed for people going through infertility have been shown to meaningfully reduce anxiety and depression. Many fertility clinics now have mental health professionals on staff or can refer you to therapists who specialize in reproductive issues. Support groups, both in person and online, also help by connecting you with people who understand what the experience actually feels like, rather than offering well-meaning but unhelpful advice.
Some couples eventually decide to stop pursuing treatment or adoption and build a fulfilling life without children. That choice is as valid as any other, and it doesn’t require an explanation or a timeline. The grief may come in waves for years, but for many people it does soften, especially with support.