Heart disease is extremely common. It is the leading cause of death in the United States for men, women, and most racial and ethnic groups. About 1 in 20 adults age 20 and older live with coronary artery disease, the most prevalent form, and roughly 805,000 Americans have a heart attack every year.
Overall Prevalence in Adults
Coronary artery disease, where plaque narrows the arteries supplying blood to the heart, affects about 5% of U.S. adults age 20 and older. That figure covers only one type of heart disease. When you add in heart failure, arrhythmias like atrial fibrillation, and valve disorders, the total number climbs significantly. Globally, atrial fibrillation and heart failure each affect an estimated 60 million people, and both conditions are expected to become more common as populations age.
The good news is that prevalence has been trending downward over the past decade. Between 2009 and 2019, the share of men reporting heart disease dropped from 8.3% to 7.0%, and the share of women fell from 4.6% to 4.2%. Better treatments, wider use of cholesterol-lowering medications, and declining smoking rates all contributed to that decline. Still, heart disease remains far more common than most people realize, especially because it can develop silently for years before causing symptoms.
How Gender Affects Your Risk
Men are roughly twice as likely as women to have heart disease. In 2019, 7.0% of men reported a diagnosis compared to 4.2% of women. That gap holds across most age groups, though it narrows after menopause as women lose the protective effects of estrogen on blood vessels. Heart disease is the leading cause of death for both sexes, which means that while women develop it less often, it is no less dangerous when it does occur.
Differences Across Race and Ethnicity
Heart disease does not affect all populations equally, and the pattern is more complicated than many people expect. In terms of who reports having heart disease, non-Hispanic white adults actually have the highest prevalence at 11.5%, followed by Black adults at 9.5%, Hispanic adults at 7.4%, and Asian adults at 6.0% (all age-adjusted, 2017 data).
Mortality tells a different story. Black Americans die from heart disease at a dramatically higher rate than any other group. In 2017, the death rate for Black Americans was 208 per 100,000 people, compared to 156.5 for white Americans, 114.1 for Hispanic Americans, and 85.5 for Asian and Pacific Islander Americans. That means Black adults were more than twice as likely as Asian or Pacific Islander adults to die of heart disease. The gap between prevalence and mortality points to disparities in access to care, timely diagnosis, and management of risk factors rather than biology alone.
These disparities trace partly to differences in risk factor burden. Nearly 47% of Black adults have high blood pressure, compared to about 29% of white adults. Rates of diabetes and obesity also run higher in Black and Hispanic communities, compounding cardiovascular risk.
The Risk Factors Driving These Numbers
Heart disease is so common largely because its risk factors are so common. High blood pressure, high cholesterol, obesity, diabetes, smoking, and physical inactivity are widespread in the U.S. population, and most people carry more than one of these risks simultaneously.
About 86 million U.S. adults have total cholesterol above 200 mg/dL, which is considered borderline high. Roughly 25 million have levels above 240 mg/dL, the threshold for high cholesterol. Between 2017 and 2020, about 10% of adults fell into that highest category. High blood pressure is even more prevalent, affecting nearly a third of white and Asian adults and close to half of Black and Hispanic adults. Diabetes, another major contributor, affects between 13% and 21.5% of adults depending on racial and ethnic group.
What makes these numbers especially important is that all of these risk factors are modifiable. Unlike age or family history, blood pressure, cholesterol, weight, and blood sugar respond to changes in diet, exercise, and, when needed, medication. The steady decline in heart disease rates over the past two decades is proof that prevention works at a population level.
Age and Heart Disease
Heart disease becomes sharply more common with age. It is the leading cause of death for adults 45 and older, but the process that leads to it, the gradual buildup of fatty deposits in artery walls, begins decades earlier. Plaque can start accumulating in the teenage years and twenties, long before any symptoms appear. By the time someone experiences chest pain or has a heart attack, the disease has typically been developing for 20 to 30 years.
This is why risk factor management matters even for younger adults who feel perfectly healthy. The earlier you address high blood pressure, high cholesterol, or excess weight, the more you slow that silent progression.
Heart Attacks by the Numbers
About 805,000 Americans have a heart attack each year. That works out to roughly one heart attack every 40 seconds. Not all of these are first-time events. About 200,000 occur in people who have already had a previous heart attack. Survival rates have improved considerably over the past few decades thanks to faster emergency response, better clot-dissolving treatments, and widespread use of procedures to reopen blocked arteries. But a heart attack still causes permanent damage to heart muscle, and survivors face a higher risk of heart failure and future cardiac events for the rest of their lives.