How Common Is Carotid Artery Disease at Different Ages?

Written August 26, 2026Encino Vascular Institute

Key Takeaways

• Carotid artery disease becomes more common as people age.
• Significant disease is uncommon in most young adults but can occur when major risk factors are present.
• Atherosclerosis can begin much earlier than the age when carotid disease becomes clinically apparent.
• Older age, hypertension, smoking, high cholesterol, diabetes, and heart disease increase carotid stenosis risk.
• Carotid artery disease can be silent, so the absence of symptoms does not necessarily mean there is no plaque.

Carotid artery disease becomes more common with advancing age because atherosclerotic plaque can accumulate gradually over many years. It is relatively uncommon in younger adults but can occur earlier when major risk factors such as smoking, high blood pressure, diabetes, high cholesterol, obesity, or a strong family history are present. Research cited in a review of carotid disease and aging found that prevalence increased from about 0.1% in men younger than 50 to more than 3% in men older than 80. However, prevalence varies considerably depending on how carotid disease is defined and which population is studied.

Carotid artery disease matters because the carotid arteries supply oxygen-rich blood to the brain. Plaque buildup can narrow these arteries and, in some cases, contribute to a transient ischemic attack (TIA) or ischemic stroke.

What Is Carotid Artery Disease?

Carotid artery disease occurs when atherosclerotic plaque builds up inside the carotid arteries in the neck. Plaque may contain cholesterol, fatty substances, calcium, and other materials. Over time, the buildup can narrow the artery and potentially interfere with blood flow to the brain.

Importantly, carotid artery disease can remain silent for years. Many people do not experience obvious symptoms until a TIA or stroke occurs. This is why controlling cardiovascular risk factors throughout adulthood is an important part of prevention.

The condition is closely associated with the same risk factors that contribute to atherosclerosis elsewhere in the body, including high blood pressure, smoking, diabetes, unhealthy cholesterol levels, physical inactivity, obesity, and increasing age.

At What Age Does Carotid Artery Disease Become More Common?

There is no single age at which carotid artery disease suddenly begins. Instead, the risk generally increases gradually as atherosclerosis progresses.

Age should therefore be viewed as one part of an individual’s overall cardiovascular risk rather than as a stand-alone diagnosis.

Carotid Artery Disease in Your 20s and 30s

Clinically significant carotid artery disease is uncommon in healthy adults in their 20s and 30s. However, the biological process behind atherosclerosis can begin much earlier in life.

The American College of Cardiology/American Heart Association cholesterol guideline notes that much of atherosclerosis begins in young adulthood and that progression is more rapid in people with multiple risk factors, including high cholesterol, hypertension, cigarette smoking, diabetes, and obesity.

This means younger adults should not assume that age alone protects them. Someone with severe inherited high cholesterol, long-term smoking exposure, uncontrolled blood pressure, diabetes, or several cardiovascular risk factors may develop vascular disease earlier than expected.

Carotid Artery Disease in Your 40s and 50s

During the 40s and 50s, cumulative exposure to cardiovascular risk factors becomes increasingly important.

A person who has had high LDL cholesterol, high blood pressure, diabetes, or smoking exposure for many years may have a greater burden of atherosclerosis than someone of the same age without these risk factors.

However, carotid plaque does not necessarily indicate severe carotid artery narrowing. The amount and characteristics of plaque, degree of stenosis, symptoms, and overall stroke risk all matter when evaluating the condition.

Carotid Artery Disease in Your 60s

The likelihood of carotid atherosclerosis becomes more significant in the 60s, particularly among people with cardiovascular risk factors.

Research has consistently identified older age as an important risk factor for carotid artery stenosis. Other factors include male sex, hypertension, smoking, high cholesterol, diabetes, and heart disease.

At this age, maintaining good control of blood pressure, cholesterol, blood sugar, weight, and smoking status becomes especially important.

Carotid Artery Disease in Your 70s and 80s+

Carotid artery disease becomes increasingly prevalent among older adults. One population study of adults older than 65 found carotid stenosis in approximately 21.5% of participants, with prevalence higher in the group older than 75 than in those aged 65–74.

Another review cited age-dependent prevalence ranging from approximately 0.1% in men younger than 50 to more than 3% in men older than 80 for carotid artery disease. These numbers should not be interpreted as universal rates because studies use different definitions, populations, and thresholds for carotid disease.

The important takeaway is straightforward: carotid disease becomes more common with age, but age alone does not determine an individual’s risk.

Can Younger Adults Develop Carotid Artery Disease?

Yes. Although significant carotid artery disease is much less common in younger adults, it can still occur.

Younger adults may have an increased risk when they have:

• Severe or inherited high cholesterol
• Long-term cigarette smoking
• Uncontrolled high blood pressure
• Diabetes
• Obesity
• A strong family history of premature cardiovascular disease
• Other forms of atherosclerotic cardiovascular disease
• Multiple cardiovascular risk factors occurring together

The underlying process can start early and progress over decades. This is one reason cardiovascular prevention should begin well before older age.

Not every neck symptom in a younger adult indicates carotid disease, and routine carotid imaging is not automatically appropriate simply because someone has a risk factor. A clinician should determine whether evaluation is medically appropriate.

How Does the Risk of Carotid Artery Disease Increase With Age?

Age increases risk primarily because atherosclerosis is a cumulative process.

Think of it this way: every year of exposure to high blood pressure, unhealthy cholesterol, smoking, diabetes, and other vascular stressors can contribute to arterial injury and plaque development.

As people age, they may also accumulate several risk factors simultaneously. For example, a 70-year-old who has hypertension, diabetes, high LDL cholesterol, and a history of smoking has a very different risk profile from a 70-year-old without these conditions.

This is why age should be considered together with overall cardiovascular health rather than used as a simple cutoff.

What Age-Related Factors Increase the Risk of Carotid Artery Disease?

Several factors become particularly relevant as people get older.

1. Long-Term Cholesterol Exposure

High levels of LDL cholesterol can contribute to plaque formation. The longer elevated cholesterol remains untreated or inadequately controlled, the greater the potential cumulative impact on the arteries.

2. High Blood Pressure

Hypertension places ongoing stress on artery walls and is an important risk factor for atherosclerotic disease and stroke.

3. Smoking History

Smoking damages blood vessels and substantially increases cardiovascular and stroke risk. The effect is cumulative, so years of exposure can matter even after a person stops smoking.

4. Diabetes

Diabetes is associated with increased vascular risk and can contribute to atherosclerosis when blood glucose is not adequately controlled.

5. Family History

A family history of premature heart disease, stroke, or vascular disease can indicate an inherited tendency toward cardiovascular risk.

6. Physical Inactivity and Obesity

Low physical activity and excess body weight can contribute to high blood pressure, unhealthy cholesterol, insulin resistance, and other factors associated with atherosclerosis.

What Are the Carotid Artery Disease Symptoms?

One of the biggest challenges is that early carotid artery disease often causes no noticeable symptoms.

People may have carotid plaque without experiencing neck pain, headaches, dizziness, or other specific warning signs. In some cases, the first obvious manifestation is a TIA or stroke.

Potential TIA or stroke warning signs include:

• Sudden weakness or numbness, especially on one side of the body
• Sudden difficulty speaking or understanding speech
• Sudden vision problems
• Sudden dizziness or loss of balance
• Sudden difficulty walking
• Sudden confusion

These symptoms require urgent medical evaluation, even if they resolve within a few minutes, as they may represent a TIA.

What Are Carotid Artery Disease Early Symptoms?

There may be no early symptoms at all.

A person should not wait for neck pain or other nonspecific symptoms before addressing cardiovascular risk factors. Carotid disease is often identified because a patient has symptoms suggesting a TIA or stroke, has known vascular disease, or undergoes appropriate evaluation for a specific clinical reason.

Should Older Adults Be Screened for Carotid Artery Disease?

Not automatically.

The U.S. Preventive Services Task Force recommends against screening asymptomatic adults in the general population for carotid artery stenosis, concluding that the potential harms of screening outweigh the benefits. This recommendation applies to adults without a history of TIA, stroke, or relevant neurologic symptoms.

That does not mean carotid evaluation is never appropriate for an older adult.

A healthcare professional may consider the individual’s symptoms, medical history, cardiovascular risk factors, and known vascular disease when deciding whether diagnostic testing is warranted. Carotid duplex ultrasound, CT angiography, or MR angiography may be used in appropriate clinical situations.

Therefore, being over 65 or 70 alone does not mean that everyone needs a carotid ultrasound.

Can Carotid Artery Disease Be Reversed?

The answer depends on what is meant by “reversed.”

Atherosclerosis is not typically reversible through lifestyle changes. However, risk-factor management and medical treatment can slow or stabilize plaque progression and reduce the risk of cardiovascular events.

Treatment may include:

• Controlling blood pressure
• Managing cholesterol
• Managing diabetes
• Stopping smoking
• Improving diet
• Maintaining appropriate physical activity
• Managing body weight
• Taking prescribed medications when indicated

For significant carotid disease, treatment may include procedures such as carotid endarterectomy or carotid artery stenting, depending on factors including the degree of narrowing, symptoms, overall health, and procedural risk.

The goal of carotid artery disease treatment is generally to reduce stroke risk and prevent disease from progressing or causing complications—not simply to make an imaging result look normal.

When Should You See a Carotid Artery Doctor?

You should discuss your vascular risk with a healthcare professional if you have multiple risk factors for atherosclerosis, known vascular disease, or symptoms that could indicate a TIA or stroke.

A carotid artery doctor may evaluate your history, cardiovascular risk factors, symptoms, and available imaging to determine whether further testing or treatment is appropriate.

If you experience sudden facial drooping, arm or leg weakness, difficulty speaking, sudden vision loss, or other possible stroke symptoms, seek emergency medical care immediately rather than waiting for a routine appointment.

For someone searching for a carotid artery doctor near you, the most important consideration is not simply proximity. Look for a qualified vascular specialist who can evaluate the complete clinical picture and explain whether diagnostic testing or treatment is appropriate.

Carotid artery disease is primarily an age-associated manifestation of atherosclerosis, but it is not exclusively an older person’s disease. The risk generally increases over the decades as plaque accumulates and as people experience longer exposure to high blood pressure, unhealthy cholesterol, diabetes, smoking, and other cardiovascular risk factors.

The most effective approach is not to wait until a certain birthday. Managing cardiovascular risk early, recognizing potential TIA or stroke symptoms, and obtaining medical evaluation when clinically appropriate can help reduce the risk of serious complications.

If you are concerned about carotid artery disease, stroke risk, or whether you need vascular evaluation, Encino Vascular Institute can help you discuss your symptoms and cardiovascular risk factors with a qualified vascular care team. 

Schedule an evaluation with Encino Vascular Institute to discuss your symptoms and treatment options.

Frequently Asked Questions