Preventing Stroke: The Role of Carotid Artery Health

Every 40 seconds, someone in the United States has a stroke. And while that number is staggering, what’s often left out of the conversation is this: many strokes are preventable, especially the kind caused by blockages in the carotid arteries.

Your carotid arteries, located on either side of your neck, are the highways that carry oxygen-rich blood to your brain. When these arteries become narrowed or blocked, most often by a buildup of plaque, it can drastically increase your risk of an ischemic stroke, the most common type.

At OC Surgeons, we believe in proactive, preventive care. And that means keeping your carotid arteries healthy and monitoring them before they become a silent threat. Let’s walk through what carotid artery disease is, how it connects to stroke risk, and what you can do now to protect your brain and future.

What Is Carotid Artery Disease?

Carotid artery disease occurs when plaque (a mixture of cholesterol, fat, and other substances) builds up inside the carotid arteries. Over time, this buildup narrows the arteries and limits blood flow to the brain.

This condition is also known as carotid stenosis, and it can develop without symptoms until a stroke or transient ischemic attack (TIA or “mini-stroke”) occurs.

Plaque buildup also increases the risk of embolism: if a piece of plaque breaks off, it can travel through the bloodstream and block a smaller vessel in the brain, causing sudden damage.

Stroke and the Carotid Connection

Strokes related to carotid artery disease are often severe and disabling, but they’re also among the most treatable and preventable when caught early.

Here’s why this connection matters:

• About 10–20% of all strokes are caused by carotid artery disease
• Even moderate narrowing of the carotid artery (50–70%) significantly raises your risk
• Plaque can rupture suddenly, making early diagnosis critical
• Interventions, like carotid endarterectomy or stenting, can drastically reduce your risk of stroke
  

Most importantly, you don’t need to wait until symptoms appear to begin protecting your carotid artery health.

Who Is at Risk?

Some people are more likely to develop carotid artery disease than others. Risk factors include:

• High blood pressure
• Smoking
• High cholesterol or triglycerides
• Diabetes
• Family history of stroke or vascular disease
• Obesity and lack of physical activity
• Age over 65
  

If you have one or more of these risk factors, especially in combination, you may benefit from a carotid artery screening even if you feel fine.

Common Symptoms (or Lack of it)

In its early stages, carotid artery disease often has no symptoms. That’s what makes it so dangerous—and why it’s often called a “silent” condition.

Sometimes, the first sign is a TIA (transient ischemic attack). A TIA is like a warning shot—it mimics stroke symptoms but typically resolves within minutes or hours.

Symptoms to watch for include:

• Sudden weakness or numbness, especially on one side of the body
• Difficulty speaking or understanding speech
• Vision problems in one or both eyes
• Loss of balance or coordination
• Dizziness or confusion
  

If you or someone near you experiences these symptoms, call 911 immediately. Even if the symptoms go away, they may indicate a serious blockage that needs attention.

Diagnosing Carotid Artery Disease at OC Surgeons

At OC Surgeons, our vascular specialists use non-invasive vascular imaging tools to detect and monitor blockages in the carotid arteries. The most common test is:

Carotid Ultrasound (Doppler)

This painless, non-invasive test uses sound waves to measure blood flow and detect narrowing or plaque buildup.

Other diagnostic tools may include:

• CT Angiography – for more detailed vascular imaging
• MRI or MRA – to view soft tissue and blood vessels

If a blockage is found, we will walk you through all your options, starting with the least invasive ones.

Treatment Options: From Prevention to Surgery

Depending on the severity of the blockage and your overall health, treatment may include:

Lifestyle Changes and Medication

For mild or moderate narrowing, many patients can manage the condition with:

• Blood pressure and cholesterol medications
• Smoking cessation
• Heart-healthy diet and exercise
• Diabetes management
• Regular monitoring
  

Carotid Endarterectomy

This surgical procedure removes plaque from the inside of the carotid artery to restore healthy blood flow. It’s often recommended for patients with moderate to severe narrowing and a high risk of stroke.

Carotid Artery Stenting

In this minimally invasive alternative, a stent is inserted via a catheter to keep the artery open. This is often used for patients who are not good candidates for open surgery.

At OC Surgeons, we evaluate every case individually to recommend the most effective and safest treatment path.

How You Can Take Action Now

Stroke prevention isn’t only for those with existing vascular disease—it’s for anyone who wants to stay ahead of future risks. Here are steps you can take today:

• Get screened if you’re over 60 or have risk factors
• Quit smoking—tobacco significantly damages your blood vessels
• Manage blood pressure, cholesterol, and blood sugar
• Exercise regularly to keep your vessels flexible and strong
• Eat a Mediterranean-style diet rich in fiber, healthy fats, and vegetables
• Talk to a vascular specialist if you have symptoms or family history