Heart Disease in Women: Symptoms, Risk Factors, and Why It's Underdiagnosed

Heart Disease: The Leading Cause of Death in Women

Heart disease is the leading cause of death among women in the United States and worldwide, responsible for approximately one in every four female deaths. Despite this sobering statistic, a dangerous misconception persists in popular culture and even within the medical community: that heart disease is primarily a man's disease. This belief has contributed to decades of under-recognition, underdiagnosis, and undertreatment of cardiovascular disease in women, with deadly consequences. In recent decades, medical research has fundamentally changed our understanding of how heart disease manifests differently in women and how it must be approached differently in terms of prevention, diagnosis, and treatment.

The perception of heart disease as a male condition stems partly from historical medical research practices. For most of the twentieth century, clinical trials for cardiovascular disease were conducted predominantly or exclusively in men. The assumption was that the underlying biology was the same in both sexes and that findings from male populations would translate directly to women—an assumption that turned out to be incorrect in important ways. The seminal Framingham Heart Study and other major cardiovascular studies initially focused on middle-aged men, and their findings shaped medical education and clinical practice for generations. It was not until the 1990s and beyond that large-scale studies specifically examining cardiovascular disease in women began to reveal the extent and nature of sex differences.

The good news is that heart disease in women is largely preventable, and when identified early, highly treatable. The challenge is recognizing the condition when it presents—which, in women, is often in ways that differ significantly from the classic male pattern—and addressing risk factors that may operate differently in women than in men. Improving women's heart health requires both increased public awareness about the real risk of heart disease in women and improved clinical training and protocols that account for sex-based differences in cardiovascular biology and disease presentation.

How Heart Disease Symptoms Differ in Women

The most iconic symptom of a heart attack—sudden, severe chest pain or pressure radiating down the left arm—is derived from studies conducted primarily in men and does not accurately represent the experience of all heart attacks, particularly those in women. While chest pain is still the most common symptom in women having a heart attack, it is more often described as pressure, tightness, squeezing, or discomfort rather than the sharp crushing pain of popular imagination. More critically, a significant proportion of women having a heart attack experience what are called "atypical" symptoms—though this term itself is problematic, as these symptoms are only atypical relative to the male-dominated research baseline, not relative to women's actual experience of cardiac events.

The atypical symptoms that are particularly common in women include shortness of breath (sometimes without chest pain at all), unusual fatigue that may develop days or weeks before the acute event, nausea and vomiting, indigestion or upper abdominal discomfort, back or jaw pain, dizziness, and lightheadedness. Because these symptoms are similar to those of many non-cardiac conditions—and because many women and their healthcare providers do not initially think of heart disease—there are often significant delays in women seeking care and in receiving diagnosis and treatment. Studies have consistently found that women wait longer than men to call for emergency services when experiencing heart attack symptoms, and that women are more likely to be evaluated for anxiety, gastrointestinal disorders, or other non-cardiac causes before cardiac causes are considered.

Silent heart attacks—myocardial infarctions that occur without the dramatic symptoms typically associated with cardiac events—may be more common in women than in men. Studies using electrocardiographic evidence of prior cardiac damage have found that many individuals, particularly women, have had heart attacks they did not recognize as such. Silent heart attacks are not harmless; they cause myocardial damage and significantly increase the risk of future cardiac events and heart failure. Regular cardiovascular risk assessment is important precisely because heart disease can progress silently, without obvious warning symptoms, until it causes a serious event.

Risk Factors: How Cardiovascular Risk Differs for Women

Many of the traditional cardiovascular risk factors—hypertension, diabetes, high cholesterol, smoking, obesity, and physical inactivity—affect women as well as men, but several operate with different magnitude or in sex-specific ways that affect cardiovascular risk assessment and management. Understanding these differences is essential for accurate risk stratification and personalized prevention strategies for women.

Diabetes is a particularly potent cardiovascular risk factor in women. Studies have found that women with diabetes have a greater relative increase in cardiovascular risk compared to men with diabetes—estimates suggest that diabetes eliminates the relative cardioprotective advantage that younger women have compared to men of the same age. Women with diabetes are more likely than diabetic men to have other cardiovascular risk factors, to be undertreated with evidence-based cardiovascular medications, and to have worse outcomes after acute cardiac events. This amplified cardiovascular risk in diabetic women demands particularly aggressive cardiovascular risk management.

Conditions unique to or more common in women—including pregnancy-related complications and autoimmune diseases—are increasingly recognized as important contributors to cardiovascular risk. Preeclampsia, gestational diabetes, preterm birth, and placental abruption are all associated with significantly elevated long-term cardiovascular risk for the mother, even decades after the affected pregnancy. A history of any of these conditions should be considered in cardiovascular risk assessment, yet they are often not captured in traditional risk calculators or addressed in standard preventive care. Women with these obstetric histories should be aware of their elevated cardiovascular risk and should work with their healthcare provider to aggressively manage modifiable risk factors throughout their lives.

Female-Specific Heart Conditions

Certain cardiovascular conditions are substantially more common in women than in men, and their distinct biological mechanisms require specific diagnostic and management approaches. Spontaneous coronary artery dissection (SCAD)—a tear in the wall of a coronary artery that can cause a heart attack—occurs predominantly in women, particularly young or middle-aged women, and may account for a significant proportion of heart attacks in women under 50. Unlike typical atherosclerotic heart attacks, SCAD often occurs in women without traditional cardiovascular risk factors and may not be identified by standard coronary angiography unless specific imaging protocols are used. Awareness of SCAD and appropriate diagnostic protocols are critical for young women presenting with acute coronary syndromes.

Takotsubo cardiomyopathy (also called stress cardiomyopathy or broken heart syndrome) is a temporary weakening of the left ventricle that is triggered by intense physical or emotional stress and mimics a heart attack. Approximately 90 percent of cases occur in postmenopausal women. Despite its often dramatic presentation, most patients recover fully with appropriate supportive care, though a minority experience serious complications. The condition illustrates the importance of emotional and physical stress on cardiovascular health, particularly in women after menopause. Microvascular coronary dysfunction—coronary artery disease affecting the tiny arteries of the heart rather than the large arteries typically imaged in standard testing—is also more common in women and may cause symptoms and events that are missed by conventional diagnostic approaches.

Atrial fibrillation (AF), the most common serious cardiac arrhythmia, is slightly less common in women than in men, but women with AF have worse outcomes and higher rates of stroke. Sex differences in AF symptoms, anticoagulation use, and catheter ablation outcomes have been documented and are an active area of research. Heart failure with preserved ejection fraction (HFpEF)—a form of heart failure in which the heart muscle pumps normally but the heart is stiffer and less able to relax—is more common in women and is associated with hypertension, obesity, and diabetes, all of which have increasing prevalence. HFpEF has historically had fewer evidence-based treatment options than heart failure with reduced ejection fraction, but recent clinical trials have begun to identify effective therapies.

The Gender Gap in Cardiovascular Research and Clinical Care

Despite the changes in research practices since the 1990s, significant gaps in knowledge and clinical care related to cardiovascular disease in women persist. Women remain underrepresented in cardiovascular clinical trials—a 2020 analysis found that women comprised less than 40 percent of participants in major cardiovascular trials even after decades of advocacy for inclusion. Underrepresentation means that dosing, efficacy, and side effect data may not fully reflect women's experience, and that treatment guidelines derived from predominantly male populations may not be optimally tailored for women.

Implicit bias in clinical care continues to affect women's cardiovascular outcomes. Studies have documented that women presenting to emergency departments with possible cardiac symptoms receive less aggressive diagnostic evaluation, wait longer for electrocardiograms, and are less likely to be admitted to cardiac care units than men with similar presentations. Women are less likely than men to receive evidence-based medications including statins, ACE inhibitors, and beta-blockers after a heart attack, and less likely to be referred for cardiac rehabilitation. These disparities in care quality translate directly into worse outcomes, including higher rates of readmission and mortality after acute cardiac events.

Addressing these disparities requires change at multiple levels: in research practices (ensuring sex-stratified analysis and adequate female representation in clinical trials), in medical education (training clinicians to recognize the sex-specific manifestations of cardiovascular disease), in clinical protocols (updating risk assessment tools and diagnostic protocols to better reflect women's presentation patterns), and in healthcare systems (addressing the structural factors that contribute to disparate care). Organizations including the American Heart Association have made women's cardiovascular health a priority and have produced resources for both clinicians and patients. The Go Red for Women campaign has raised public awareness, though sustained effort is needed to translate awareness into better prevention, diagnosis, and treatment outcomes for all women.

Prevention and Action: Protecting Your Heart Health

The most important message about heart disease and women is this: it is largely preventable. The American Heart Association's Life's Essential Eight framework identifies eight behaviors and health factors that are the foundation of cardiovascular health: eating well, being physically active, not smoking, getting adequate sleep, managing weight, controlling blood pressure, managing blood cholesterol, and controlling blood sugar. Each of these factors is modifiable, and achieving and maintaining favorable levels across all eight is associated with dramatically reduced risk of heart attack, stroke, heart failure, and premature cardiovascular death.

Women should have their cardiovascular risk assessed regularly starting in their 20s, including blood pressure measurement, cholesterol testing, blood glucose measurement, and a discussion of family history and personal cardiovascular risk factors. Women with pregnancy-related complications, autoimmune diseases, or mental health conditions—all of which are associated with elevated cardiovascular risk—should ensure that their providers are aware of these histories and incorporating them into cardiovascular risk management. Women who smoke should seek support for cessation, as smoking is among the strongest modifiable cardiovascular risk factors and is associated with disproportionate cardiovascular risk in women compared to male smokers.

Women who experience symptoms that may represent cardiac disease—chest discomfort, shortness of breath, unusual fatigue, jaw or back pain, or nausea—should seek medical evaluation promptly rather than attributing these symptoms to stress or other causes. Trusting one's own body and advocating for thorough evaluation is essential, particularly given the documented tendency to attribute women's cardiac symptoms to non-cardiac causes. If you are dismissed or do not receive a satisfying explanation for your symptoms, seeking a second opinion from a cardiologist or a specialist in women's cardiovascular health is entirely appropriate. Your heart health is worth the effort to get the right answers.