Cardiovascular disease and heart disease are not the same thing, though the two terms are often used interchangeably in everyday conversation. Cardiovascular disease is the broader category. It covers all conditions affecting the heart and blood vessels throughout the body, while heart disease refers specifically to conditions affecting the heart itself. All heart diseases are cardiovascular diseases, but not all cardiovascular diseases are heart disease.
How the Two Terms Relate
Think of cardiovascular disease as an umbrella. Underneath it sit two major groups: diseases of the heart and diseases of the blood vessels. Heart disease is one piece of that umbrella. Stroke, peripheral artery disease, and conditions affecting veins and arteries elsewhere in the body are the other pieces.
The confusion is understandable. News headlines, health campaigns, and even some doctors use “heart disease” and “cardiovascular disease” as though they mean the same thing. The National Heart, Lung, and Blood Institute puts the distinction plainly: heart disease is a catch-all phrase for conditions that affect the heart’s structure and function, while cardiovascular disease includes all of those plus diseases of the blood vessels throughout the body.
What Counts as Heart Disease
Heart disease covers a wide range of problems that specifically involve the heart organ. The most well-known is coronary artery disease, where plaque builds up inside the arteries that supply blood to the heart muscle. This is the condition most people picture when they hear “heart disease,” and it’s the type that leads to heart attacks.
But heart disease also includes:
- Heart valve disease: problems with the four valves that open and close to control blood flow through the heart’s chambers
- Cardiomyopathy: diseases of the heart muscle itself, which can make the heart too stiff, too thick, or too weak to pump effectively
- Congenital heart disease: structural problems present from birth, such as holes between heart chambers or malformed valves
- Arrhythmias: irregular heartbeats, including atrial fibrillation
- Heart failure: a condition where the heart can no longer pump enough blood to meet the body’s needs
These conditions all share one thing: the problem originates in the heart itself, whether in its muscle, its electrical system, its valves, or the arteries feeding it.
What Falls Under Cardiovascular Disease but Not Heart Disease
This is where the distinction matters most. Several serious conditions affect blood vessels outside the heart and qualify as cardiovascular disease without being heart disease.
Stroke is the most significant example. A stroke happens when blood flow to the brain is blocked or when a blood vessel in the brain bursts. It involves blood vessels, not the heart directly, so it falls under cardiovascular disease but not heart disease. This is a distinction many people miss. Together, heart attacks and strokes account for 85% of all cardiovascular disease deaths worldwide.
Peripheral artery disease is another common example. It involves narrowed arteries in the legs, arms, or abdomen, reducing blood flow to those areas. The underlying process (plaque buildup in artery walls) is the same one behind coronary artery disease, but the location is different. Other vascular conditions in this category include aneurysms (bulges in artery walls), deep vein thrombosis (blood clots in deep veins), carotid artery disease (narrowed arteries in the neck), and renovascular hypertension (high blood pressure caused by narrowed kidney arteries).
Rarer vascular conditions also fall here: vasculitis (inflammation of blood vessels), Raynaud’s phenomenon (blood vessels that overreact to cold or stress), and intestinal ischemia (reduced blood flow to the gut). None of these are heart disease, but all are cardiovascular disease.
Why the Distinction Matters
Knowing the difference changes how you understand your risk. The same underlying process, atherosclerosis (plaque buildup in artery walls), drives coronary artery disease, stroke, and peripheral artery disease. If you have one of these, your risk of developing the others is higher. Someone diagnosed with peripheral artery disease in their legs, for instance, also has a significantly elevated risk of heart attack and stroke, because the same process is likely happening in blood vessels throughout their body.
The distinction also matters when you’re reading health statistics. Cardiovascular disease kills an estimated 19.8 million people globally each year, accounting for roughly 32% of all deaths. That number includes strokes, which make up a large share. If you see a statistic about “heart disease” deaths, it’s a smaller number covering only the heart-specific conditions. Mixing up the two can make risk seem either larger or smaller than it actually is, depending on which term was intended.
Shared Risk Factors
Despite the differences in location and specific symptoms, heart disease and other cardiovascular diseases share nearly identical risk factors. High blood pressure, high cholesterol, smoking, diabetes, obesity, physical inactivity, and poor diet all contribute to plaque buildup and blood vessel damage regardless of where in the body that damage occurs. This is precisely why the conditions are grouped under one umbrella: preventing one largely means preventing the others.
Among premature deaths (people under 70) from noncommunicable diseases, at least 38% are caused by cardiovascular disease. Many of these deaths are preventable through the same lifestyle factors that reduce heart disease risk specifically. The overlap in prevention is so complete that, from a practical standpoint, protecting your heart and protecting your blood vessels are nearly the same project.