"Popcorn lung" is the nickname for bronchiolitis obliterans. That"s a condition that damages your lungs" smallest airways and also makes friend cough and also feel quick of breath. It"s sometimes led to by breathing in a chemical supplied to flavor microwave popcorn. But other chemistry or lung illnesses can likewise cause popcorn lung.

Your lungs space where your blood picks up oxygen prior to carrying that to cell in the rest of your body. As soon as you breathe in, waiting flows right into your lungs through your windpipe, or trachea. Her windpipe divides into two tubes called the bronchi, which cause your left and also right lungs.

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Inside her lungs, those tubes split again and also again, prefer the branches that a tree. The the smallest of those branches are called bronchioles, and also they end in small air sacs referred to as alveoli. The alveoli space where the oxygen is choose up by your blood.

When you have "popcorn lung," those tiny air passages gain irritated and also inflamed. That leads to scarring that makes them narrower. That provides it harder because that you come get enough air.

What causes Popcorn Lung?

The chemical that offered this condition its nickname is diacetyl. After workers at a manufacturing facility that packaged microwave popcorn were uncovered to have bronchiolitis obliterans more often than other people, some suppliers stopped making use of diacetyl as a flavoring. Yet it"s still used in some electronic cigarette seasonings in the US. Plenty of e-cigarette equipments state they aren"t utilizing this chemistry in their products and its usage in e-cigarettes is banned in Europe.

Another common cause is acetaldehyde, a chemical uncovered in the smoke native marijuana and also some digital cigarettes. Acetaldehyde additionally can damages the lining of her mouth, throat, and also stomach.

Other chemicals that can cause popcorn lung include:

metal oxide fumes, a common byproduct of welding Sulfur dioxide, a pollutant released by burn fossil fuels Ammonia Chlorine Nitrogen oxides Hydrochloric mountain Sulfur mustard, a chemical weapon well-known as "mustard gas"

Sometimes, bronchiolitis obliterans happens after you"ve had actually a serious illness that affects your lungs, for instance some develops of pneumonia or bronchitis. And some people who have actually rheumatoid arthritis can obtain popcorn lung as a side result of the condition.

If you"ve had actually a lung transplant or a stem cell transplant, you may obtain this condition if her body do the efforts to refuse the brand-new organ. It"s the primary reason of death in civilization who acquire lung transplants.



The main symptoms that popcorn lung are a dried cough and also shortness the breath. These display up in between 2 weeks and also 2 month after you"ve been approximately a toxic gas or had actually an illness. You"re especially likely to have them as soon as you"re working out or doing heavy labor. If you"ve had actually a lung transplant, it could take numerous years for symptoms to present up.

If you feel worn down without an noticeable reason or wheeze as soon as you don"t have asthma or a cold, that also could be a symptom that bronchiolitis obliterans.


If you have actually some the the symptoms of bronchiolitis obliterans, her doctor could recommend a computerized tomography (CT) scan of your chest. Several X-rays space taken from different angles and are placed together to make a much more complete picture. They"ll probably likewise want come test just how well her lungs room working.

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A chest X-ray can tell your doctor if your lungs space holding in too much air, but the best method to check you havebronchiolitis obliterans is to have a biopsy. This is most regularly done through surgery.


Popcorn lung reasons lasting damage, for this reason it"s important to capture it early. If you do, you might have the ability to slow it under or save it from gaining worse:

If the was resulted in by breath in harmful chemicals, you"ll want to remain away native them. You could need come wear protective equipment at occupational or possibly change jobs. drugs that sluggish down her immune mechanism may assist protect her bronchioles from an ext damage. Her doctor more than likely will provide you medication to assist with your sneeze and open up your airways, and oxygen to assist make it less complicated to breathe.



NIH Genetic and also Rare illness Information Center: "Bronchiolitis obliterans."

American Lung Association: "Popcorn Lung: A Dangerous threat of Flavored E-Cigarettes."

National academy of work Safety and also Health: "Flavorings-Related Lung Disease."

National Jewish Health: "Bronchiolitis Obliterans."

Toxicology Reports: "Pathology, toxicology, and latency of irritant gases well-known to reason bronchiolitis obliterans disease: go diacetyl to the right the pattern?"

eco-friendly Health Perspectives: "Flavoring chemistry in E-Cigarettes: Diacetyl, 2,3-Pentanedione, and Acetoin in a Sample the 51 Products, including Fruit-, Candy-, and Cocktail-Flavored E-Cigarettes."

Environmental defense Agency: "Sulfur Dioxide."

Seminars in respiratory tract and an essential Care Medicine: "Occupational and Environmental Bronchiolar Disorders."

Seminars in respiratory and critical Care Medicine: "Bronchiolitis Obliterans Syndrome -- The Achilles" heel of Lung Transplantation."