Having a baby at 45 is not impossible, but it is genuinely difficult. About 87% of women are infertile by age 45, and those who do conceive face significantly higher risks of miscarriage, chromosomal abnormalities, and pregnancy complications. Still, babies are born to women in this age group every year, and understanding the real numbers can help you make an informed decision.
The Odds of Getting Pregnant at 45
Fertility declines in two phases: a slow, steady drop between ages 20 and 35, then a sharp acceleration over the next decade. By 45, the vast majority of women cannot conceive naturally. Studies of populations that don’t use contraception found that 87% of women were infertile by this age. One British study tracking fertility trends found the natural conception rate effectively dropped to zero by age 42.
That said, “rarely” is not “never.” The CDC’s most recent data, from 2024, shows a birth rate of 1.1 per 1,000 women aged 45 to 49. That’s a small number, but it represents thousands of births each year in the United States. Many of these pregnancies involve assisted reproduction, particularly donor eggs.
IVF With Your Own Eggs vs. Donor Eggs
If you’re considering IVF at 45, the success rates with your own eggs are very low. In a study of women aged 43 to 51 undergoing IVF with their own eggs, the live birth rate per cycle start ranged from about 0.4% to 1.3% depending on the year. An earlier large study of over 1,000 IVF cycles found that no woman older than 45 achieved a live birth using her own eggs. The pregnancy rate for women over 42 was just 6.6% per cycle, compared to 28.2% for women under 40.
Donor eggs change the picture dramatically. Because the eggs come from a younger woman, the age of your uterus matters far less than the age of the egg. Live birth rates with donor eggs are significantly higher than with your own eggs at this age, though the process is more expensive and involves additional emotional and ethical considerations. If having a biological connection to the child is essential to you, using your own previously frozen eggs (if you froze them younger) is another option worth discussing with a fertility specialist.
Miscarriage and Chromosomal Risks
Miscarriage risk rises steeply with age. At 45, the estimated miscarriage rate ranges from 57% to 80%, according to the Mayo Clinic. That means even when conception happens, the majority of pregnancies do not result in a live birth. The primary reason is chromosomal abnormalities in the eggs, which become increasingly common as the egg supply ages.
The risk of Down syndrome illustrates this clearly. At age 25, the chance is roughly 1 in 1,250. At 45, it jumps to about 1 in 30. Other chromosomal conditions follow a similar pattern. This is why prenatal screening becomes especially important for pregnancies at this age. Options include a simple blood draw that analyzes fetal DNA circulating in your bloodstream (often called NIPT) and diagnostic procedures like amniocentesis, which can confirm or rule out chromosomal conditions with high accuracy.
What Pregnancy Looks Like at 45
Pregnancies at 45 involve more monitoring than those in younger women. Guidelines from the American College of Obstetricians and Gynecologists recommend a detailed anatomical ultrasound for women delivering at 35 or older, a first-trimester ultrasound to check for twins (which are more common with assisted reproduction), and a third-trimester growth scan for women 40 and older. The growth scan checks whether the baby is measuring too large or too small, both of which occur more frequently in older pregnancies.
You’re also more likely to develop gestational diabetes, high blood pressure, and preeclampsia. These conditions are manageable with proper care, but they do mean more appointments, more blood work, and closer surveillance throughout pregnancy. The experience of being pregnant at 45 often involves a level of medical attention that can feel reassuring or overwhelming, depending on your perspective.
Labor, Delivery, and C-Section Rates
Nearly half of all births to women 40 and older are cesarean deliveries, at 47.9%, compared to the national average of 32.4%. Several factors drive this: older mothers are more likely to have conditions that complicate vaginal delivery, labor may progress differently, and care providers tend to have a lower threshold for surgical delivery when risks are elevated. If you’re hoping for a vaginal birth, it’s worth having that conversation early with your provider, though you should be prepared for the possibility of a C-section.
Recovery and Life as an Older Parent
Physically, the postpartum recovery for a healthy 45-year-old is not dramatically different from that of a younger mother, assuming no chronic health conditions. The body heals from birth in roughly the same way regardless of age. The bigger adjustment tends to be the transition to new parenthood itself, particularly the sleep deprivation and lifestyle shift.
Research on postpartum depression in older mothers is mixed. Some studies find no increased risk, while others suggest the adjustment to parenthood may feel different. What matters more than age are factors like social support, mental health history, and the baby’s temperament. Older mothers often report certain advantages: they tend to feel more emotionally prepared, they frequently have friends who are already parents and can offer guidance, and they’re more likely to have financial stability and education levels that are protective against poor outcomes for both mother and child. Many describe their parenting style as more patient and intentional than they believe it would have been a decade earlier.
Making the Decision
The honest answer is that 45 is late, biologically speaking, but not categorically too late. Your individual fertility, health, and willingness to pursue assisted reproduction all factor in. If you’re open to donor eggs, your chances of a successful pregnancy improve substantially. If using your own eggs is important, the odds are very low but not zero.
What helps most at this stage is getting a clear picture of your own fertility. An evaluation that includes hormone levels and an antral follicle count (an ultrasound that estimates your remaining egg supply) can tell you more than any population statistic. Some women at 45 have virtually no fertility left, while a small number still have enough ovarian reserve to attempt conception. The numbers in this article describe averages, and your situation may be better or worse than the average. A fertility evaluation turns the abstract into something concrete and personal.