Blocked arteries, also known as atherosclerosis, develop when fatty deposits called plaque build up inside the arteries. Over time, this buildup can reduce blood flow, increasing the risk of heart attack, stroke, and peripheral artery disease (PAD). The condition often develops gradually and may not cause symptoms until blood flow becomes significantly restricted.
Knowing the warning signs can help you seek medical attention early.
What Causes Blocked Arteries?
Plaque forms when cholesterol, fat, calcium, and other substances accumulate on artery walls. Common risk factors include:
- High cholesterol
- High blood pressure
- Smoking
- Diabetes
- Obesity
- Physical inactivity
- Unhealthy diet
- Family history of heart disease
- Increasing age
Managing these risk factors can lower your chances of developing cardiovascular disease.
1. Chest Pain (Angina)
One of the most common symptoms of blocked coronary arteries is chest pain or pressure, often described as:
- Tightness
- Heaviness
- Squeezing
- Burning
- Pressure in the center of the chest
The discomfort often occurs during physical activity or emotional stress and improves with rest.
2. Shortness of Breath
If your heart isn’t receiving enough oxygen-rich blood, you may experience:
- Difficulty catching your breath
- Breathlessness during exercise
- Fatigue with normal activities
Shortness of breath can have many causes, so it should be evaluated by a healthcare professional.
3. Pain That Spreads to the Arm, Jaw, Neck, or Back
Heart-related pain doesn’t always stay in the chest.
Some people feel discomfort that radiates to:
- Left or right arm
- Jaw
- Neck
- Shoulder
- Upper back
Women, older adults, and people with diabetes may experience less typical symptoms.
4. Pain in the Legs While Walking
Pain, cramping, or aching in the calves, thighs, or hips during walking that improves with rest may be a sign of peripheral artery disease (PAD), which occurs when arteries supplying the legs become narrowed.
5. Cold Feet or Legs
Reduced blood flow may cause:
- Cold feet
- Cold lower legs
- Pale skin
- One foot feeling colder than the other
These symptoms warrant medical evaluation, especially if they are new or worsening.
6. Slow-Healing Wounds
Poor circulation can make it difficult for cuts or sores on the feet or legs to heal.
This is especially important for people with diabetes, who are at higher risk of circulation problems.
7. Numbness or Weakness
Reduced blood flow may contribute to:
- Leg weakness
- Numbness
- Tingling
These symptoms can also result from nerve disorders or other medical conditions.
8. Fatigue
Feeling unusually tired during activities that were previously easy may be a sign that the heart isn’t pumping blood efficiently.
Persistent or unexplained fatigue should be discussed with your healthcare provider.
9. Dizziness or Fainting
Reduced blood flow to the brain or heart rhythm problems can lead to:
- Lightheadedness
- Dizziness
- Fainting
These symptoms require prompt medical assessment.
10. Sudden Stroke Symptoms
Blocked arteries supplying the brain can cause a stroke.
Call emergency services immediately if you notice:
- Sudden weakness on one side of the body
- Difficulty speaking
- Facial drooping
- Sudden vision changes
- Severe dizziness
- Loss of coordination
Time is critical—early treatment can save brain tissue and improve recovery.
Who Is Most at Risk?
You may have a higher risk of blocked arteries if you:
- Smoke or use tobacco
- Have high blood pressure
- Have high LDL (“bad”) cholesterol
- Have diabetes
- Are overweight or obese
- Have a family history of heart disease
- Are physically inactive
- Eat a diet high in saturated fat and processed foods
