Stroke is a leading cause of death and long-term disability in the United States, and it affects women in unique ways. Women account for more than half of all strokes nationwide, and one in five women will have a stroke in her lifetime. While stroke risk increases with age, women face additional risk tied to hormonal changes and reproductive events across their lives.
From the onset of menstruation to pregnancy and menopause, shifts in hormones can influence blood pressure, cholesterol, inflammation, and blood clotting. Certain pregnancy complications, such as high blood pressure or gestational diabetes, can raise a woman’s risk for stroke years later, while the transition through menopause is associated with a sharp rise in cardiovascular risk. Despite this, many women are unaware that these life stages play a role in brain health.
In this Q&A, Andrea Lendaris, MD, MS, a stroke neurologist and Assistant Professor of Neurology at the Icahn School of Medicine at Mount Sinai, explains how stroke risk changes across a woman’s life, what warning signs to watch for, and steps women can take to reduce their risk.
Andrea Lendaris, MD, MS
How does stroke risk affect women differently than men?
Women and men share traditional risk factors like high blood pressure, diabetes, smoking, and abnormal heart rhythms such as atrial fibrillation. These risks often have a disproportionately higher stroke risk in women, making prevention and early treatment especially important. Blood pressure is a particularly important example: Stroke risk in women begins to rise at lower thresholds compared to men, especially during midlife, making earlier recognition and control critical. There are three specific examples:
- Women also experience stroke risk shaped by their hormonal changes throughout their lifespan. Estrogen helps supports vascular health, including affecting blood vessel function, cholesterol levels, inflammation, and clotting. As hormone levels change over time, and decline during menopause, these protective effects diminish, and stroke risk increases.
- A women’s reproductive history can also provide important insight into a woman’s long-term vascular risk. Pregnancy complications are common, affecting about one in five women, and may reflect underlying vascular biology and signal an increased risk of stroke later in life.
- Certain gynecologic conditions such as polycystic ovary syndrome (PCOS) and endometriosis are increasingly recognized as contributors to long-term vascular risk.
How can early life factors, like menstrual patterns or use of contraceptives, be connected to stroke risk?
Early reproductive health can offer important clues about future vascular risk. Irregular menstrual cycles, conditions like polycystic ovary syndrome (PCOS), and early menopause are often associated with underlying metabolic or hormonal imbalances, including insulin resistance, dyslipidemia, and elevated blood pressure. These factors can quietly shape cardiovascular risk decades before any symptoms appear.
Hormonal contraception is another key consideration. Estrogen-containing contraceptives can increase the risk of blood clots and ischemic stroke, particularly in women who have additional risk factors such as migraine with aura, smoking, or high blood pressure. For most healthy young women, these medications remain safe and effective, but individualized counseling is critical. Understanding a patient’s full vascular risk profile helps guide safer contraceptive choices and reinforces the importance of early prevention.
Pregnancy is often described as a “stress test” for the body. What does that mean when it comes to stroke risk?
Pregnancy involves profound changes in hormone levels, in your blood flow, in your body’s metabolism, and even how blood clots. All of these reshape your vascular system, the network of arteries, veins, and capillaries that circulate blood, also known as your circulatory system. Blood pressure, cholesterol levels, inflammation, and coagulation pathways all shift to support the developing fetus and prepare for delivery. For many women, these changes are well tolerated. But when complications arise, such as preeclampsia, gestational hypertension, gestational diabetes, placental abruption, preterm birth, or delivering a small-for-gestational-age infant, they can unmask an underlying susceptibility to vascular disease.
Importantly, this “stress test” does not end at delivery. The postpartum period, sometimes referred to as the “fourth trimester,” extending up to a year after birth, is a critical window for stroke risk. In the early postpartum period, women are at risk of more clotting. During this time, the risk for complications such as stroke increases, including from clots in the brain’s blood vessels or rare tears in neck arteries. These risks highlight that pregnancy-related vascular stress is dynamic and prolonged, not confined to the delivery hospitalization.
There is also encouraging evidence that breastfeeding may help mitigate some of this risk. Observational data suggest that lactation is associated with lower rates of stroke and cardiovascular death, with the greatest benefit seen in the first year of cumulative breastfeeding. This protective effect is thought to be mediated through improvements in blood pressure, insulin resistance, cholesterol, and inflammation.
Pregnancy complications should not be viewed as isolated events but instead as early indicators of long-term vascular health, and can help identify women earlier who may benefit from closer monitoring, risk factor modification, and targeted interventions well beyond the postpartum period.
What happens to stroke risk during and after menopause?
Menopause marks a major turning point in vascular health, driven largely by the loss of estrogen and its effects on the brain and blood vessels. Estrogen plays an important role in maintaining vascular flexibility, regulating cholesterol, and modulating inflammation. As levels decline, blood vessels become stiffer and women begin to experience changes in blood pressure, cholesterol, body fat distribution, and overall vascular function. One common and often overlooked pattern is the slow rise of blood pressure, or “hypertension creep.” Women who previously had normal blood pressure may begin to see increases. Even subtle changes can add up and significantly raise stroke risk. These shifts help explain why heart and stroke risk rises sharply after menopause, particularly in the first decade, when women begin to surpass men in overall stroke burden.
The timing of menopause also matters. Early menopause—whether natural or the result of an intervention such as a hysterectomy—is associated with higher long-term cardiovascular and stroke risk. At the same time, menopausal symptoms themselves are not just a quality-of-life issue. Severe symptoms, such as hot flashes and night sweats, are increasingly recognized as markers of vascular instability and are associated with higher cardiovascular risk. Treating these symptoms appropriately may play a role in improving overall vascular health.
Hormone therapy is an important and often misunderstood part of this conversation. Earlier studies suggested increased risks of stroke and cardiovascular disease with hormone replacement therapy. These findings were largely driven by study populations that were older, further from menopause, or already had underlying cardiovascular disease. More recent data support a “timing hypothesis,” showing that hormone therapy can be used safely for symptom management for appropriately selected women, typically those under age 60 and within 10 years of their final menstrual period.
How hormone therapy is delivered also matters: transdermal (patch) and vaginal estrogen formulations do not appear to increase stroke risk, and vaginal estrogen may even have protective effects.
Taken together, menopause is not just a hormonal milestone but a critical window for identifying and managing stroke risk. It is a time to recognize new diagnoses like hypertension, address symptoms that may signal underlying vascular changes, and take a more individualized, evidence-based approach to prevention.
How do stroke symptoms sometimes look different in women, and when should women seek emergency care?
Many classic stroke symptoms, such as sudden weakness on one side of the body, difficulty speaking, or vision loss, occur in both women and men. Women, however, are somewhat more likely to report additional, less specific symptoms such as fatigue, confusion, dizziness, headache, or nausea. These symptoms can be more easily overlooked or attributed to other causes, which may delay recognition and treatment.
Despite this variability, the key message is urgency. Any sudden neurologic change should be treated as a medical emergency. The acronym BEFAST (Balance disturbance, Eyes/vision changes, Face drooping, Arm weakness, Speech difficulty, Time to call 911) is a helpful tool to recognize common stroke symptoms, but it should not limit action if something feels wrong. If symptoms are abrupt and new, it’s time to call 911. Rapid evaluation is critical, as timely treatment can significantly reduce disability and improve outcomes.
What are the most important things women can do at any age to reduce their risk of stroke?
Stroke prevention in women starts with understanding risk across the lifespan. In addition to traditional risk factors—such as high blood pressure, diabetes, high cholesterol, smoking, sleep, and weight—women should also know their reproductive and gynecologic history, including pregnancy complications and timing of menopause. These events offer important insight into underlying vascular health and help identify women who may benefit from earlier or more aggressive prevention strategies.
Blood pressure control is especially important, as stroke risk in women rises at lower thresholds and often increases gradually over time. Recognizing patterns like this “creep” and addressing them early can have a major impact. For women with specific risk factors—such as migraine with aura, a history of pregnancy complications, or conditions like endometriosis or PCOS—more tailored management may be needed.
Equally important are lifestyle strategies that support vascular health, including regular physical activity, a heart-healthy diet, good sleep, and stress management. The most effective approach is proactive and continuous. Stroke prevention is not tied to a single stage of life, but to recognizing risk early and managing it consistently over time.