Cardiovascular disease remains the leading cause of death for both men and women in the United States, yet the timing of when heart disease begins is not the same for everyone. A major new study published in the Journal of the American Heart Association provides some of the clearest evidence yet that men develop cardiovascular disease significantly earlier than women, even in a modern population with changing lifestyle and health risk factors.
The findings challenge assumptions that the gap between men and women has narrowed and highlight young adulthood as a critical window for prevention, especially for men.
This article breaks down what the research found, why it matters, and how it could change the way we think about heart disease prevention.
Cardiovascular disease, often abbreviated as CVD, is a broad term that includes conditions such as coronary heart disease, heart failure, and stroke. Coronary heart disease, or CHD, is the most common form and occurs when plaque builds up in the arteries supplying blood to the heart.
Historically, men have been known to develop coronary heart disease about ten years earlier than women. This difference has often been attributed to hormonal protection in women and higher smoking and blood pressure rates in men.
However, in recent decades, risk factors such as obesity, diabetes, and hypertension have become more common among women, raising an important question. Has the age gap between men and women narrowed in today’s population?
To answer this question, researchers analyzed data from the Coronary Artery Risk Development in Young Adults study, commonly known as CARDIA. This is one of the longest-running and most detailed heart health studies in the United States.
The study followed more than 5,100 Black and White adults who were between 18 and 30 years old when they enrolled in the mid 1980s. Participants were tracked for over 34 years, with regular health exams, surveys, and medical record reviews through 2020.
This long follow-up period allowed researchers to pinpoint exactly when cardiovascular disease first appeared and how risk differed by sex across adulthood.
The results were striking and consistent across multiple analyses.
Men developed cardiovascular disease earlier than women by an average of seven years. When researchers focused specifically on coronary heart disease, the gap widened to more than ten years.
Men reached a five percent risk of cardiovascular disease at about age 50, while women reached the same risk closer to age 57. For coronary heart disease, men reached a two percent risk in their early 40s, while women did not reach that level until their early 50s.
Importantly, the study found no meaningful difference between men and women when it came to stroke risk during midlife. Heart failure showed some differences later in life, but not during early adulthood.
One of the most important insights from this research is the timing of risk divergence.
The study found that differences in cardiovascular disease rates between men and women began around age 35. From that point forward, men consistently experienced higher rates of heart disease through midlife.
This challenges the idea that heart disease is only a concern later in life. For men especially, the fourth decade of life appears to be a turning point where cardiovascular risk accelerates.
While cardiovascular disease includes many conditions, coronary heart disease was the primary driver of earlier risk in men.
Researchers found that men developed coronary heart disease much earlier than women, and this difference remained even after accounting for traditional risk factors such as cholesterol, blood pressure, smoking, and blood sugar levels.
This suggests that factors beyond standard measurements may play a role. Biological differences, inflammation, plaque characteristics, genetics, and social influences may all contribute to why men experience coronary artery disease earlier.
The researchers examined seven key components of cardiovascular health based on the American Heart Association’s Life’s Essential 8 framework. These included diet quality, physical activity, smoking status, body weight, blood pressure, cholesterol, and blood glucose.
Surprisingly, adjusting for these factors did not fully explain the higher risk seen in men. Even when cardiovascular health scores were similar, men still faced significantly earlier onset of heart disease.
Blood pressure explained part of the difference, but only modestly. Overall, traditional risk factors accounted for less than 20 percent of the sex gap in cardiovascular disease risk.
This finding suggests that prevention strategies need to look beyond conventional risk factors alone.
The study has important implications for how and when cardiovascular risk should be assessed.
Currently, many risk calculators and screening efforts focus on adults aged 40 and older. However, this research supports earlier evaluation, particularly for men in their 30s.
Early risk assessment could include cholesterol testing, blood pressure monitoring, lifestyle counseling, and possibly advanced screening tools for subclinical atherosclerosis in higher-risk individuals.
The findings also highlight a gap in preventive care. Young adult women are far more likely to engage with the healthcare system due to reproductive and gynecologic care, while men often have fewer preventive visits during early adulthood.
Encouraging preventive healthcare engagement among young men could be a key strategy to reduce premature heart disease.
Although women develop cardiovascular disease later on average, heart disease remains the leading cause of death among women. The later onset does not mean lower lifetime risk.
Women often experience heart disease differently, with symptoms that may be less typical and diagnoses that occur later in the disease process. This can lead to delayed treatment and worse outcomes.
The study reinforces the importance of prevention for everyone, while emphasizing that timing and strategies may need to differ by sex.
One of the greatest strengths of this study is its long duration and detailed follow up from young adulthood through midlife. Few studies have been able to track heart disease risk so precisely over such a long period.
The study also included a large number of Black participants, helping address gaps in cardiovascular research diversity.
However, the findings are limited to Black and White adults and may not fully apply to other racial or ethnic groups. Additionally, because participants are still relatively young, the study could not assess differences in late adulthood or postmenopausal risk.
This landmark study confirms that men continue to develop cardiovascular disease earlier than women, with the most significant difference seen in coronary heart disease. These differences emerge as early as age 35 and persist through midlife.
Perhaps most importantly, the findings show that traditional risk factors do not fully explain why men are at higher risk earlier, signaling a need for broader approaches to prevention, earlier screening, and greater engagement of young adults in heart health.
Heart disease does not begin overnight. It develops silently over decades, and this research makes it clear that prevention must start earlier than many people realize.
Freedman AA, Colangelo LA, Ning H, et al.
Sex Differences in Age of Onset of Premature Cardiovascular Disease and Subtypes: The Coronary Artery Risk Development in Young Adults Study.
Journal of the American Heart Association. 2026;15(3).
DOI: 10.1161/JAHA.125.044922
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This content is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding any medical condition or health concern.
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