Question: What Makes a Pregnancy High Risk?

What Makes a Pregnancy High Risk?

All pregnancies carry some level of risk, but some are considered “high risk” when there’s a greater chance of complications for the mother, the baby, or both. A high-risk pregnancy doesn’t mean something will definitely go wrong — it means that extra care, closer monitoring, or specialized treatment may be needed to help ensure a safe outcome.

Understanding what makes a pregnancy high risk can help expectant parents feel more informed, ask the right questions, and partner with their care team more confidently.

Pregnancy-Related Problems

Some pregnancies are labeled high risk because of complications that develop during the pregnancy itself. These may include:

• Recurrent Pregnancy Loss – Multiple miscarriages may indicate an underlying health problem. Identifying and treating the cause can help reduce the risk of future loss.
• Preterm Birth – Delivering before 37 weeks can pose risks to the baby’s development. Preventive monitoring and treatments can help lower the risk.
• Blood Pressure Problems – Conditions like preeclampsia can put both mother and baby at risk and require careful monitoring.
• Bleeding – Heavy or unexplained bleeding during pregnancy may signal complications that need immediate attention.

Preexisting Maternal Health Conditions

Pregnancy can worsen certain health problems or make managing them more complex. When chronic conditions are present, pregnancies often need specialized oversight, sometimes from a Maternal-Fetal Medicine (MFM) specialist. Examples include:

• Heart and Lung Disorders
• Diabetes or Endocrine Disorders
• Kidney Disorders
• Blood Disorders
• Neurologic or Psychiatric Conditions
• Autoimmune or Infectious Diseases
• Obesity
• Cancer or Other Serious Illnesses

With proper care, many people with these conditions go on to have healthy pregnancies, but monitoring and adjustments are key.

Fetal Birth Defects and Complications

Modern ultrasound and prenatal testing make it possible to detect, and in some cases even treat, birth defects before delivery. These conditions may include:

• Central Nervous System or Spinal Cord Conditions (e.g., spina bifida)
• Congenital Heart Problems and Arrhythmias
• Kidney, Bladder, or Gastrointestinal Issues
• Chromosomal Conditions such as Down Syndrome (Trisomy 21), Trisomy 13, or Trisomy 18
• Skeletal Dysplasias and Structural Abnormalities
• Complications from Drug or Chemical Exposure

In addition, pregnancies involving twins, triplets, or more are often considered high risk due to the increased likelihood of growth concerns, preterm birth, and delivery complications.

Other Risk Factors

Age can play a role — pregnancies in people under 17 or over 35 may be considered higher risk. Lifestyle choices, such as smoking, alcohol use, or certain environmental exposures, can also add complications.

The Outlook

Hearing the words “high risk” can feel overwhelming, but many people with high-risk pregnancies have healthy outcomes. In fact, the label is less about predicting problems and more about ensuring you get the extra care and attention you need. Frequent prenatal visits, tailored monitoring, and specialist input give you and your baby the best chance for a safe pregnancy and delivery.