healthy lungs and airways
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What is COPD?

COPD, or chronic obstructive pulmonary disease, is a lung disorder that makes it hard to breathe. The first symptoms can be so mild that people mistakenly chalk them up to "getting old." People with COPD may develop chronic bronchitis, emphysema, or both. COPD tends to get worse over time, but catching it early, along with good care, can help many people stay active and may slow the disease.

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illustration of copd
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Symptoms of COPD

Inside the lungs, COPD can clog the airways and damage the tiny, balloon-like sacs (alveoli) that absorb oxygen. These changes can cause the following symptoms:

  • Shortness of breath in everyday activities
  • Wheezing
  • Chest tightness
  • Constant coughing
  • Producing a lot of mucus (sputum)
  • Feeling tired
  • Frequent colds or flu
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copd patient using handrail
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Advanced Symptoms of COPD

Severe COPD can make it difficult to walk, cook, clean house, or even bathe. Coughing up excess mucus and feeling short of breath may worsen. Advanced illness can also cause:

  • Swollen legs or feet from fluid buildup
  • Weight loss
  • Less muscle strength and endurance
  • A headache in the morning
  • Blue or grey lips or fingernails (due to low oxygen levels)
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chronic bronchitis
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COPD: Chronic Bronchitis

This condition is the main problem for some people with COPD. Its calling card is a nagging cough with plenty of mucus (phlegm). Inside the lungs, the small airways have swollen walls, constant oozing of mucus, and scarring. Trapped mucus can block airflow and become a breeding ground for germs. A  "smoker's cough" is typically a sign of chronic bronchitis. The cough is often worse in the morning and in damp, cold weather.

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ct scan of lungs with emphysema
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COPD: Emphysema

Emphysema damages the tiny air sacs in the lungs, which inflate when we take in a breath and move oxygen into the blood. They also push out carbon dioxide, a waste gas, when we breathe out. When you have emphysema, these delicate air sacs can't expand and contract properly. In time, the damage destroys the air sacs, leaving large holes in the lungs, which trap stale air. People with emphysema can have great trouble exhaling.

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hand wearing pulse oximeter
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Diagnosis: Physical Exam

First, your doctor will listen to your chest as you breathe, then will ask about your smoking history and whether you have a family history of COPD. The amount of oxygen in your blood may be measured with a blood test or a pulse oximeter, a painless device that clips to a finger.

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man taking lung function test
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Diagnosis: Spirometry Breath Test

Spirometry is the main test for COPD. It measures how much air you can move in and out of your lungs, and how quickly you do it. You take a deep breath and blow as hard as you can into a tube. You might repeat the test after inhaling a puff of a bronchodilator medicine, which opens your airways. Spirometry can find problems even before you have symptoms of COPD. It also helps determine the stage of COPD.

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chest xray showing copd
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Diagnosis: Chest X-Ray

A chest X-ray isn't used to diagnose COPD, but it may help rule out conditions that cause similar symptoms, such as pneumonia. In advanced COPD, a chest X-ray might show lungs that appear much larger than normal.

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airway and bronchodilator
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Treatment: Bronchodilators

Bronchodilators are medications that relax the muscles of the airways to help keep them open and make it easier to breathe. Anticholinergics, a type of bronchodilator, are often used by people with COPD. Short-acting bronchodilators last about four to six hours and are used on an as-needed basis. Longer-acting bronchodilators can be used every day for people with more persistent symptoms. People with COPD may use both types of bronchodilators.

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hand holding corticosteroids
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Treatment: Corticosteroids

If bronchodilators don't provide enough relief, people with COPD may take corticosteroids. These are usually taken by inhaler. They may reduce inflammation in the airways. Steroids may also be given by pill or injection to treat flare-ups of COPD.

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woman undergoing lung training
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Treatment: Lung Training

Pulmonary rehabilitation classes teach people ways to keep up with their daily activities without as much shortness of breath. Specific exercises help to build muscle strength, including the muscles used in breathing. You also will learn to manage stress and control breathing.

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older couple blowing on pinwheel
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Breathing Better With COPD

Pursed-lip breathing can reduce the work of breathing. Breathe in normally through your nose. Then slowly blow the air out through your mouth with your lips in a whistle or kissing position. Your exhale should be longer than the inhale. To strengthen your diaphragm, you can lie on your back on a bed with one hand on your abdomen and one on your chest. Keep your chest as still as possible but let your stomach rise and fall as you breathe.

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woman using oxygen tube
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Treatment: Oxygen Therapy

Severe COPD lowers the oxygen in your blood, so extra oxygen may be needed for your body. It can help you stay active without feeling as tired or out of breath and help protect your brain, heart, and other organs. If you have COPD and need supplemental oxygen, you will typically get the oxygen through tubing from an oxygen tank to the nostrils. Smoking, candles, and other flames are off-limits near oxygen tanks.

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sem scan of legionella bacteria
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Treatment: Antibiotics

People with COPD are at greater risk for lung infections than healthy people. If your cough and shortness of breath get worse or you develop fever, talk to your doctor. These are signs that a lung infection may be taking hold, and your doctor may prescribe medications to help knock it out as quickly as possible. You may also need adjustments to your COPD treatment regimen.

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doctor looking at lung xray
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Treatment: Surgery

A small number of people with COPD may benefit from surgery. Bullectomy and lung volume reduction surgery remove the diseased parts of the lung, allowing the healthy tissue to perform better and making breathing easier. A lung transplant may help some people with the most severe COPD who have lung failure, but it can have serious complications.

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older woman with copd jogging
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COPD and Exercise

Walking is one of the best things you can do if you have COPD. Start with just five or 10 minutes at a time, three to five days a week. If you can walk without stopping to rest, add another minute or two. Even if you have severe COPD, you may be able to reach 30 minutes of walking at a time. Use your oxygen while exercising if you are on oxygen therapy. Discuss your exercise plans with your doctor.

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burning cigarette
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What Causes COPD?

About 90% of people with COPD are current or former smokers -- and their disease usually appears after age 40. Secondhand smoke and exposure to environmental irritants and pollution also can increase your risk of COPD. In rare cases, the DNA passed down through a family can lead to COPD, even in "never smokers." One of these genetic conditions is called Alpha-1 Antitrypsin (AAT) deficiency.

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close up of healthy cilia
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How Quitting Smoking Helps

Smokers with COPD will lose lung function more quickly. Tobacco smoke destroys the tiny hair-like cilia that normally repair and clean the airways -- and harms the lungs in other ways, too. Quitting will slow or stop the damage, and is simply the most important step you can take for COPD. You'll also get the other benefits of quitting: foods taste better and you will lower the risk for heart disease.

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sandwich and glass of water
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COPD and Diet

A healthy diet is important for people with COPD. Being overweight can make it harder to breathe, and being underweight can make you weak. Talk to your doctor about the best eating plan for you. Common guidelines include:

  • Drink 6-8 glasses of water or non-caffeinated beverages daily.
  • Eat high-fiber foods such as whole grain bread, bran, and fresh fruit.
  • Avoid overeating.
  • Avoid gassy foods such as fried foods, beans, or carbonated drinks.
  • Eat 4-6 small meals each day.
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close up of lung cancer
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COPD and Cancer

Many people with COPD also develop lung cancer -- likely due to a history of smoking cigarettes. Researchers are studying whether specific genes make some people more vulnerable to COPD or cancer, or both illnesses. Chronic inflammation, caused by smoking or other lung irritants, could play a role in COPD and cancer, as well.

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older couple walking on beach
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Living With COPD

It’s important to stay active, even if you feel short of breath. You may need to pace yourself or use oxygen therapy, but staying active will make you stronger. Avoid secondhand smoke, chemical fumes, and other lung irritants.  Be sure to get vaccinated against the flu and pneumococcal disease. Wash hands frequently, and avoid hacking, sniffling people during cold and flu season. An online community may provide support and practical tips from others with COPD to get the most out of every day.

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Sources | Medically Reviewed on 09/03/2020 Reviewed by Jennifer Robinson, MD on September 03, 2020


1) Innerspace Imaging/Photo Researchers
2) Science Faction, Kevin A. Somerville/Phototake
3) Mike Kemp/Rubberball
4) Scott Cazamine, James Cavallini/Photo Researchers
5) Du Cane Medical Imaging Ltd. / Photo Researchers
6) Dorling Kindersley
7) John Thys / Reporters / Photo Researchers
8) Scott Camazine / Phototake
9) Medical RF/Photo Researchers, Getty
10) iStock
11) Amanda Voisard/The Washington Post via Getty Images
12) Stock4B
13) Furgolle/Corbis
14) Kallista Images
15) Emer Ogan/Vetta
16) Dana Hursey/Workbook Stock
17) Christoph Hetzmannseder/Flickr
18) Kallista Images
19) Beth D. Yeaw/Flickr
20) Moredun Animal Health Ltd/SPL
21) Tom Merton/OJO Images


American Academy of Allergy, Asthma and Immunology: "Chronic Obstructive Pulmonary Disease (COPD)."

American Association for Respiratory Care: "YourLungHealth.Org: Living Well With COPD."

American Lung Association: "Understanding Chronic Bronchitis," "Chronic Obstructive Pulmonary Disease," "Living With COPD: Nutrition," "Surgery," "Living With COPD: A Life Change."

American Thoracic Society: "What Are the Signs and Symptoms of COPD?" "What Tests Can Be Done to Assess My Breathing?" "What Are Bronchodilators?" "What Are Corticosteroid (Anti-inflammatory) Medications?" "What Other Treatments Are Available?" "Why Do I Need Oxygen Therapy?"

American Thoracic Society and European Respiratory Society, Standards for the Diagnosis and Management of Patients with COPD, 2004.

Cedars-Sinai: "Emphysema."

Centers for Disease Control and Prevention: "Chronic Obstructive Pulmonary Disease Among Adults Aged 18 and Over in the United States, 1998-2009."

Cleveland Clinic: "Nutritional Guidelines for People With COPD."

COPD Foundation: "Getting Tested," "Risk Factors," "Healthy & Active Living."

COPD International: "Breathing: Pursed Lip/Diaphragm Exercises."

National Emphysema Foundation: "Chronic Obstructive Pulmonary Disease (COPD)."

National Heart Lung and Blood Institute: "What Is COPD?" "Signs and Symptoms of COPD," "How Is COPD Diagnosed?" "How Is COPD Treated?" "Living With COPD."

National Institutes of Health: "What to Expect During Pulmonary Rehabilitation."

National Jewish Health: "COPD Treatment," "COPD: Lifestyle Management."

NCI Cancer Bulletin, "Searching For Commonalities Between Two Deadly Lung Diseases," March 9, 2010.

Rabe KF. Am J Respir Crit Care Med, September 15, 2007.

Texas Heart Institute: "Chronic Obstructive Pulmonary Disease."

Reviewed by Jennifer Robinson, MD on September 03, 2020

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.