Heart Disease in Older Adults: When Feeling Fine Doesn’t Tell the Whole Story

Heart Disease Is More Common as We Age

Heart disease is the leading cause of death in the United States, according to the Centers for Disease Control and Prevention (CDC).

Yet many older adults feel well, remain active, and have no obvious warning signs. It is easy to assume that if we can walk, exercise, work in the garden, or enjoy our favorite activities without difficulty, our hearts must be in good shape.

Unfortunately, that assumption can be wrong.

The American Heart Association’s 2026 statistics report that, during 2021–2023, coronary heart disease affected an estimated 18.4% of men and 8.5% of women ages 60–79. Among adults aged 80 and older, the figures were 32.5% of men and 20.6% of women.

These figures describe coronary heart disease as a health condition, including diagnoses such as angina and previous heart attacks. They should not be interpreted as the percentage of older adults who have plaque visible on a scan or a particular degree of narrowing in their coronary arteries.

The message is straightforward: heart disease becomes more common with age, and feeling healthy does not necessarily mean the coronary arteries are healthy.

The Danger of Assuming That Feeling Well Means Being Well

Coronary artery disease develops when plaque builds up in the arteries supplying blood to the heart. Plaque contains cholesterol, fats, inflammatory material, and other substances. Over time, it can narrow arteries or contribute to the formation of a blood clot that blocks blood flow.

Some people experience chest pressure, discomfort, breathlessness, or reduced exercise tolerance. Others have few symptoms—or none they recognize as heart-related.

Symptoms can also be less typical in older adults. Unusual fatigue, shortness of breath, nausea, weakness, or discomfort in the back, jaw, shoulders, or arms may sometimes signal a heart problem.

There is an important distinction here: being active and feeling well are encouraging signs, but they cannot independently rule out coronary artery disease.

Nor does having coronary plaque automatically mean a person is about to have a heart attack. The amount of plaque, its characteristics, the location and severity of any narrowing, the effect on blood flow, and a person’s other risk factors all matter.

The challenge is to avoid both complacency and unnecessary alarm.

What Do Heart Tests Actually Tell Us?

One reason heart disease can be confusing is that different tests measure different things. A result from one test may not answer the same question as a result from another.

1. Coronary Artery Calcium (CAC) Scoring

A CAC scan uses a CT scanner to measure calcium deposits in the coronary arteries.

A higher score generally indicates a greater burden of calcified coronary plaque and is associated with increased cardiovascular risk. The result can help clinicians assess risk and guide preventive treatment.

But CAC scoring has limitations:

• It measures calcified plaque, not every type of plaque.
• It does not directly measure how much blood can flow through an artery.
• It does not show with precision whether a particular narrowing is restricting blood flow.
• A high score does not, by itself, establish that a specific artery needs a stent or surgery.

CAC is primarily a measure of plaque burden and risk—not a direct test of whether a particular narrowing is causing inadequate blood flow.

2. Stress Testing

Exercise stress tests and pharmacological stress tests assess how the heart responds to increased demand or simulated stress.

Depending on the type of test, clinicians may look for ECG changes, symptoms, abnormalities in heart-wall movement, or areas of reduced blood supply.

A reassuring stress test can be valuable. However, its meaning depends on the test used, the quality of the study, the person’s circumstances, and the clinical question being asked.

A normal result does not necessarily mean that coronary arteries are free of plaque. Nor does every normal stress test exclude every form of coronary disease.

Stress tests and anatomical imaging answer related but different questions. One evaluates the heart’s response to stress; the other can show the arteries themselves.

3. Coronary CT Angiography (CCTA)

Coronary CT angiography uses contrast dye and CT imaging to visualize the coronary arteries. It can show plaque, the location of disease, and estimated narrowing.

Unlike a calcium score alone, CCTA can identify both calcified and noncalcified plaque.

However, the images have limitations. Heavy calcium can create a phenomenon known as blooming artifact, in which calcium appears larger than it really is and makes the artery’s open channel harder to assess. This can complicate the estimate of how severe a narrowing is.

That limitation deserves attention, but it does not mean a concerning result should automatically be dismissed as an artifact. The finding must be interpreted in context.

4. CT-Derived Fractional Flow Reserve (CT-FFR)

CT-FFR uses information from coronary CT angiography and computational modeling to estimate how a narrowing may affect blood flow to the heart muscle. It is a functional estimate derived from CT data, not a direct pressure measurement taken inside the artery.

For interpretation, values matter—but so does the context.

• Above 0.80: Generally considered normal, suggesting the narrowing is not significantly limiting blood flow by this measure.
• 0.76–0.80: A borderline or “gray zone” in which interpretation requires particular care.
• 0.75 or lower: More clearly abnormal and more strongly associated with a flow-limiting narrowing.

These are useful guides, not automatic treatment instructions. The precise value, the location of the suspected narrowing, the pressure change across it, image quality, coronary anatomy, symptoms, and other test results all matter.

A CT-FFR result should not be interpreted in isolation. Nor should uncertainty about image quality automatically be taken as proof that an abnormal result is false.

The important question is not simply whether a number is normal or abnormal. It is what that result means for the individual patient—and whether further assessment would meaningfully clarify the risk.

Why Apparently Conflicting Results Deserve Attention

Imagine a person whose stress test is reassuring, but whose coronary CT scan identifies substantial plaque or a potentially important narrowing.

Is one test wrong?

Not necessarily.

A stress test may show no evidence of significant inducible ischemia under the conditions of that study, while CT imaging may identify anatomical disease. CT-FFR may add a further estimate of whether a narrowing affects blood flow.

The tests may be describing different aspects of the same underlying problem.

Sometimes, the findings can be reconciled through a careful review of the images, the technical quality of the tests, the person’s symptoms, and their medical history. In other cases, uncertainty remains.

The location of a suspected narrowing matters, too. Disease involving the left main coronary artery—the artery that supplies a large portion of the heart’s circulation—can carry different implications from disease in a smaller branch. A suspected significant left-main narrowing deserves particular attention.

The lesson is not that one test should always override another. It is that an important discrepancy deserves a clear explanation.

Patients should not assume that a normal stress test makes every anatomical finding harmless. Equally, they should not assume that every abnormal scan means a procedure is inevitable.

Why Might a Cardiologist Recommend an Angiogram?

When noninvasive tests raise concern about important coronary artery disease, a cardiologist may recommend invasive coronary angiography.

During this procedure, a thin catheter is guided through a blood vessel to the heart. Contrast dye is used to visualize the coronary arteries under X-ray imaging.

The procedure can help clarify the location and severity of narrowing. In selected cases, additional measurements—such as invasive fractional flow reserve (FFR) or instantaneous wave-free ratio (iFR)—can help determine whether a narrowing is restricting blood flow. Intravascular ultrasound (IVUS) may also provide detailed images from inside an artery.

An angiogram can provide information that noninvasive tests cannot always establish with confidence. However, it is an invasive procedure and carries risks, including bleeding, vascular injury, contrast-related complications, kidney injury in susceptible patients, and, rarely, more serious complications.

The benefits and risks depend on the individual’s circumstances.

Importantly, having an angiogram does not automatically mean having a stent. The procedure may clarify the diagnosis and inform a treatment decision. Whether a stent, bypass surgery, medication, or another approach is appropriate depends on the findings and the person’s overall situation.

For patients who are unsure about a recommendation, asking for a clear explanation—or seeking another qualified opinion when time and clinical circumstances allow—is reasonable.

If a clinician believes a finding may represent high-risk disease, however, patients should ask specifically how urgently it needs to be assessed rather than assuming that waiting is harmless.

Questions Every Patient Should Feel Comfortable Asking

Medical appointments can feel rushed, especially when the results are complicated. But patients deserve explanations they can understand.

Consider asking:

1. What is the main concern? Is it the amount of plaque, the severity or location of a narrowing, evidence of reduced blood flow, or a combination of these?
2. How certain are we? Which findings are clear, and which are limited by image quality or uncertainty?
3. How do the tests fit together? If one result is reassuring and another is concerning, how can both be true?
4. What are the risks of acting versus waiting? How urgent is the recommendation, and what could happen if further testing is delayed?
5. What would an angiogram establish? What information would it add that is not already available?
6. What would determine treatment? Under what circumstances would medication alone be appropriate, and what findings might lead to a stent or bypass surgery?
7. What can I do now to reduce risk? Which changes to medication, cholesterol, blood pressure, diabetes management, tobacco use, diet, or physical activity are most important for me?

These are not confrontational questions. They are part of informed decision-making.

A good medical decision should involve an understandable explanation of the problem, the options available, the likely benefits and risks, and the consequences of delaying action.

Prevention Still Matters—Even After Plaque Is Found

Finding coronary plaque is not a reason to give up. It is an opportunity to understand risk and take appropriate steps to reduce it.

Depending on individual circumstances, prevention and treatment may include:

• Cholesterol management: LDL cholesterol and, when appropriate, other lipid measures can help guide treatment.
• Blood pressure control: Persistent high blood pressure increases strain on the cardiovascular system.
• Diabetes management: Elevated blood sugar can contribute to vascular damage.
• Not smoking: Tobacco use substantially increases cardiovascular risk.
• Regular physical activity: Appropriate activity supports cardiovascular and overall health.
• A heart-supportive eating pattern: A diet emphasizing vegetables, fruits, legumes, whole grains, nuts, and suitable sources of protein can support heart health.
• Medication when indicated: Statins and other medicines may reduce risk or treat established disease, depending on the patient’s needs.
• Ongoing follow-up: Risk factors and treatment plans should be reviewed as circumstances change.

One important caution: people with known or suspected significant coronary disease should discuss exercise intensity with their healthcare professional. Being active is generally beneficial, but new symptoms or a concerning diagnosis may change what level of exertion is appropriate until the situation is clarified.

Lifestyle measures and medication can be powerful, but they do not eliminate every risk associated with an important coronary narrowing. Prevention and appropriate diagnostic assessment serve different purposes.

Know the Warning Signs

Heart attack symptoms vary. They may include chest pressure, squeezing, fullness or pain; discomfort in the arms, back, neck, jaw or stomach; shortness of breath; cold sweats; nausea; or lightheadedness.

Some people experience less obvious symptoms, and older adults may not have the classic presentation often shown in television dramas.

Call 911 if you suspect a heart attack. Do not drive yourself to the hospital or wait to see whether symptoms pass.

New or worsening chest discomfort, unexplained breathlessness, fainting, or a sudden decline in exercise tolerance deserves prompt medical attention. Severe, sudden, or ongoing symptoms require emergency assessment.

Knowing the warning signs is important—but remember that coronary artery disease can exist without them.