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What is popcorn lung? Can you get it from vaping?

What is popcorn lung? Can you get it from vaping?

 

February 19, 2019

Bronchiolitis obliterans. It is a serious lung condition. Commonly called by its nickname "Popcorn lung". Maybe you have heard of this recently in the media associated with the dangers of vaping. But how many vapers get popcorn lung?

What causes Popcorn Lung

Diacetyl is one of the main chemicals attributed to the cause of popcorn lung. It is a chemical compound that tastes extremely buttery and occurs naturally after the process of fermentation.

Lung.org explains that inhaling large amounts of diacetyl can hurt the small airways in the lungs, called bronchioles. This thickens the bronchioles, making the passages more narrow. You can imagine this might make it harder to breathe.

does vaping cause popcorn lung?

What are the symptoms of popcorn lung?

The symptoms for a person with popcorn lung are coughing, wheezing, and shortness of breath.

The National Center for Biotechnology Information found that exposure to diacetyl does cause damage to airways. So the scientific community backs up the idea that inhalation of this chemical, especially in large amounts, can be harmful to the lungs. In a 2016 study by the National Center for Biotechnology Information, it found that “this diagnosis has been documented in a variety of exposures, including fumes from flavoring plants, smoke from burn pits, and environmental sulfur gas.” These are the documented cases of popcorn lung.

Does vaping cause popcorn lung?

Diacetyl and E-Cigarettes

Here is where we tie this to the vape industry. A study conducted by the Department of Environmental Toxicology at UC Davis found that combustible cigarettes contain diacetyl.

Those who smoke traditional cigarettes, which contain much more diacetyl than e-liquid ever did, did not get popcorn lung either.

Assuming that the e-liquid actually contains diacetyl, this chemical is yet to be linked with the disease known as popcorn lung.  A 2014 study published in Critical Reviews in Toxicology stated, “smoking has not been shown to be a risk factor for bronchiolitis obliterans.” The individuals who developed issues in 2000 were exposed to the chemical in large amounts in a factory or environmental setting. They were not smoking.

Smoking combustible cigarettes has many deadly consequences, but obliterative bronchiolitis aka popcorn lung is not yet proven to be one. Overall, popcorn lung from vaping is a myth. Not yet seen in vapers or cigarette smokers.

Cancer Research UK added that “There’s no good evidence that e-cigarettes could cause the lung condition called popcorn lung. There have been no cases of popcorn lung reported in people who use e-cigarettes.”

In the past, tests were done on various e-liquid flavors and there were amounts of diacetyl found in them. In general, a majority of e-liquid flavors are leaving this ingredient out completely.

Where Popcorn Lung was first discovered

What is popcorn lung? When was it discovered? The formal name for this rare disease is obliterative bronchiolitis.

In 2000 eight workers from a microwave popcorn factory reported having lung issues. The CDC reported that “All eight had a respiratory illness resembling bronchiolitis obliterans with symptoms of cough and dyspnea on exertion, had worked at the same popcorn factory.” Of the eight patients reported, four were mixers and four were microwave-packaging workers. The culprit for this respiratory issue was found to be a chemical called Diacetyl. This is used as a key ingredient in butter popcorn flavoring. In the factory, this ingredient had become airborne and was being inhaled by the workers who came near it over an extended period of time. It has gained some infamy in the vaping community because some brands in the past used this as an ingredient for flavoring.

References:

Harvard - https://www.hsph.harvard.edu/news/hsph-in-the-news/e-cigs-pack-harmful-punch/
CDC - https://www.cdc.gov/mmwr/preview/mmwrhtml/mm5116a2.htm
CDC - https://www.lung.org/about-us/blog/2016/07/popcorn-lung-risk-ecigs.html
NCBI - https://www.ncbi.nlm.nih.gov/
Online LIbrary - https://onlinelibrary.wiley.com/doi/epdf/10.1002/tox.20153
NCBI - https://www.ncbi.nlm.nih.gov/pubmed/24635357
Cancer Research UK - https://www.cancerresearchuk.org/about-cancer/causes-of-cancer/cancer-controversies/does-vaping-cause-popcorn-lung



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