“Advanced maternal age” is the clinical label for a pregnancy in which you will be 35 or older on your due date. It is not a diagnosis. It is a category that flags risks worth watching more closely, and the honest summary is that most pregnancies after 35 are healthy.
The threshold has a dated history. It was set decades ago because 35 was roughly the age at which the risk of a chromosomal condition matched the risk of amniocentesis. Testing has changed completely since then, so that math no longer applies. In its 2022 guidance on pregnancy at age 35 or older, the American College of Obstetricians and Gynecologists (ACOG) points out that 35 is an arbitrary cutoff and that several risks do not become clinically meaningful until closer to 40.
Conceiving Takes Longer, on Average
Fertility declines gradually through your 30s and more sharply after 37, driven by both the number and quality of remaining eggs. Miscarriage rates also rise, largely because of chromosomal errors in the egg.
So the usual advice to try for a year before seeking help shifts. If you are 35 or older, most specialists recommend an evaluation after six months of trying, and sooner if your cycles are irregular or you have a history of pelvic surgery or endometriosis.
Genetic Screening Is Offered to Everyone Now
The old rule that pointed patients toward amniocentesis at 35 has been retired. ACOG now recommends that both screening and diagnostic testing be discussed with and offered to every pregnant patient, regardless of age.
The chance of a chromosomal condition such as Down syndrome does rise steadily with age, so the conversation carries more weight after 35. But the tests themselves are the same ones offered to a 27-year-old: cell-free DNA screening from a blood draw, first trimester ultrasound and blood work, and diagnostic options like chorionic villus sampling or amniocentesis if you want a definitive answer. Genetic counseling beforehand helps you decide which of those you actually want, rather than defaulting into all of them.
The Risks That Deserve Real Attention
Two of the most common complications after 35 are also two of the most manageable.
Gestational diabetes becomes more common with age. Universal screening between 24 and 28 weeks catches most cases, and earlier screening is common with additional risk factors. Well-controlled gestational diabetes carries far less risk than uncontrolled diabetes, which is why the nutrition and monitoring piece matters so much.
High blood pressure disorders, including preeclampsia, also rise with maternal age. Age 35 or older counts as a moderate risk factor, and when it combines with other factors like a first pregnancy, a higher BMI, or a family history of preeclampsia, low-dose aspirin started in the late first trimester meaningfully reduces risk. This is one of the few genuinely preventive tools in obstetrics, and it is worth asking about directly.
Rates of cesarean delivery, placenta previa, and multiples are also somewhat higher, especially with fertility treatment.
What Extra Monitoring Usually Looks Like
ACOG and the Society for Maternal-Fetal Medicine suggest a third trimester ultrasound to assess fetal growth, since babies at both the smaller and larger ends of the range are more common in this group.
Antenatal fetal testing, meaning nonstress tests or biophysical profiles, is a more nuanced question. The evidence supports offering antenatal fetal testing when you will be 40 or older at delivery, typically starting somewhere between 32 and 36 weeks. Between 35 and 39, current guidance says the evidence is not strong enough to recommend it for age alone, so it comes down to whether other risk factors are present. If your provider recommends it and you are 36, ask what else on your chart is driving that decision.
On timing, current guidance supports planned delivery between 39 weeks 0 days and 39 weeks 6 days for otherwise uncomplicated pregnancies in this group.
Guidance in this area continues to be revised as more data comes in, so it is fair to ask your care team what the current thinking is.
Care That Matches Your Actual Risk, Not Your Birthday
The point of maternal-fetal medicine is proportion. Some patients over 35 need nothing beyond standard prenatal care with a growth scan added. Others, particularly those managing diabetes, hypertension, autoimmune conditions, or a prior complicated pregnancy, benefit from close co-management alongside their OB/GYN.
The High Risk Pregnancy Center offers preconception counseling, advanced ultrasound, first trimester screening, genetic counseling, and diabetes management across Las Vegas, Henderson, and Reno, working alongside your existing provider. Call 702-382-3200 in Southern Nevada or 775-404-5000 in Reno, or request an appointment to schedule a visit and find out what your pregnancy actually calls for.
