Why Cardiovascular Health Matters So Much During Pregnancy

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February 9, 2026

A Go Red for Women Day Perspective

Heart health matters at every stage of life — and nowhere is that more evident than during pregnancy. Pregnancy places unique demands on a woman’s heart and circulatory system, making cardiovascular health a cornerstone of both maternal and fetal well-being. Yet heart disease is often underestimated or misunderstood in pregnancy. In fact, cardiovascular conditions are now the leading cause of pregnancy-related maternal death in the United States, underscoring the importance of awareness, prevention, and early intervention.

As we observe Go Red for Women Day, it is vital for expectant mothers and their families to understand how heart health influences pregnancy outcomes and long-term health — and what steps can be taken to protect both mother and baby.

Pregnancy Is a Stress Test for the Heart

Pregnancy triggers profound physiological changes to support the growing fetus and prepare the body for childbirth. These include:

  • Increased blood volume: Total blood volume rises by around 40–45 percent, peaking in the second and third trimesters.
  • Higher cardiac output: The heart pumps 30–50 percent more blood per minute to meet maternal and fetal needs.
  • Elevated heart rate: Heart rate increases progressively during pregnancy, placing additional workload on the cardiovascular system.

These adaptations are normal — but they also mean the heart is working significantly harder than usual. For most women, these changes are well tolerated. However, for women with undiagnosed cardiovascular issues or risk factors like hypertension and diabetes, pregnancy can reveal or worsen heart problems.

Why Heart Health During Pregnancy Matters

Cardiovascular health during pregnancy influences outcomes in three major areas: maternal safety, fetal development, and long-term maternal health.

1. Reducing Maternal Risk

Cardiovascular disease is now the number one cause of maternal mortality in the U.S. — responsible for about one-third of pregnancy-related deaths. Conditions such as hypertensive disorders of pregnancy (including preeclampsia), gestational hypertension, peripartum cardiomyopathy, and congenital heart disease can lead to serious complications if not managed proactively.

Hypertensive disorders, in particular, are concerning: gestational hypertension and preeclampsia not only increase risk during pregnancy, but are linked to elevated lifelong risks of chronic hypertension and cardiovascular disease later in life. Women who experience high blood pressure in pregnancy have a significantly higher chance of developing future cardiovascular conditions, including stroke and heart failure.

2. Supporting Fetal Health

The placenta and fetus depend on stable, well-regulated maternal blood flow for oxygen and nutrients. Poor cardiovascular health — for example, from unmanaged hypertension or heart disease — can contribute to adverse fetal outcomes such as preterm birth, low birth weight, and placental complications.

Emerging evidence even suggests that better cardiovascular health early in pregnancy may reduce the risk of hypertensive disorders and benefit long-term heart health for both mother and child.

3. Lifelong Health Implications

Pregnancy is often described as “nature’s stress test” — a period when underlying health issues can first become evident. A history of pregnancy complications such as preeclampsia, gestational diabetes, or hypertension is now recognized as a strong predictor of future cardiovascular disease. Women who experience these complications are at increased risk of heart disease, stroke, and metabolic disorders years after giving birth.

But this knowledge is also empowering: identifying at-risk women during or after pregnancy allows for early lifestyle and clinical interventions that can lower their long-term cardiovascular risk. Interventions include heart-healthy diet changes, increased physical activity, smoking cessation, weight management, and close monitoring of blood pressure, cholesterol, and glucose levels.

What Expectant Mothers Can Do

Maintaining cardiovascular health before, during, and after pregnancy involves collaboration between the woman and her healthcare team. Practical steps include:

Healthy Lifestyle Habits

  • Heart-healthy diet: Emphasize fruits, vegetables, whole grains, lean proteins, and healthy fats. Limit salt and added sugars.
  • Regular physical activity: Aim for pregnancy-safe activities like walking or prenatal yoga, with approval from a healthcare provider.
  • Adequate sleep and stress management: Mental health is an important part of cardiovascular health, and prenatal psychological screening may improve outcomes.
  • Avoid tobacco and limit alcohol: These substances increase cardiovascular risks for both mother and baby.

Medical Monitoring

  • Regular prenatal care: Routine visits allow for early detection of elevated blood pressure, abnormal glucose levels, and other risk factors.
  • Heart-focused screening: Pregnant women with a history of heart conditions, hypertension, or pregnancy complications should receive additional monitoring.
  • Postpartum follow-up: Heart strain can continue after delivery, and follow-up care remains critical in the first year postpartum.

A Call to Action on Go Red for Women Day

Go Red for Women Day emphasizes that heart health isn’t just a future concern — it is a present one, particularly for women who are pregnant or planning to become pregnant. Preparing your heart before pregnancy, maintaining healthy habits during pregnancy, and continuing cardiovascular care after delivery are all essential strategies for both maternal and child health.

If you have a history of high blood pressure, diabetes, obesity, or previous pregnancy complications, talk to your provider early — before conception if possible — to optimize your cardiovascular health. With attention, planning, and support, most women can achieve healthy pregnancies and set the foundation for long-term heart health.

Pregnancy is a transformative experience — physically, emotionally, and medically. Because the cardiovascular system undergoes dramatic changes during pregnancy, maintaining heart health is vital not only for a safe birth, but for lifelong well-being. On this Go Red for Women Day, and every day, The Center for Women’s Health encourages women and families to take cardiovascular health seriously: it matters for now, for the future, and for every life that begins with a healthy heart. Contact Center for Women’s Health for an consultation today.