Popcorn is one of the most popular snack foods in the world. And with the advent of the microwave popcorn bag, it also has become one of the most convenient. However, recent research shows that the flavoring used in the lining of the bag may be linked to certain lung diseases and cancers. The research here discusses these findings and offers some alternative strategies for enjoying the snack.
¶ … activities which are more popular or enjoyable than sitting down to watch a movie with a steaming bag of freshly popped microwave popcorn. The smell and taste of microwave popcorn both invoke strong sensory cues often associated with the pleasant experience of cinema viewer-ship. It is not often that we stop to consider the content of these convenient single-serve bags, either nutritionally or chemically. However, new evidence is emerging all the time to suggest that there are significant and alarming health imperatives to begin examining our popcorn more closely. As the discussion here will show, popcorn as a snack-food is fairly innocuous and, in fact, if served properly, can be an excellent low-calorie source of carbohydrates. However, when combined with the synthetic substances, the additives and the packaging compounds used in a bag of microwave popcorn, popcorn can present its consumer with severe health risks.
This is particularly troubling because of the severity of these health risks and the degree to which microwave popcorn consumption so thoroughly penetrates consumer buying habits today. As the text by Noble & Noble (2011) indicate, Americans collectively purchase roughly 3 billion bags of microwave popcorn annually. And until recently, this was not a trend which invited any great concern. However, "a few years ago, popcorn factory workers became concerned with a condition known as 'popcorn lung' caused by an airborne butter flavoring chemical called diacetyl. This was a fatal condition for factory workers, causing thickening and scarring of the lungs. It wasn't considered a big problem for those of us who aren't exposed to it at such high levels; however there was a story of a man who ate 2 bags of microwave popcorn a day who developed popcorn lung." (Noble & Noble, p. 1)
The concern over diacetyl has prompted a substantial consumer backlash against microwave popcorn, especially in the shadow of mounting evidence that long-term consumption of microwave popcorn might result in similar ill-effects. According to the article by Sagon (2012), the popularity of microwave popcorn is a significant road-block to intervening with its consumption even as it proves to be a significant health risk. According to Sagon, the primary cause for the health concerns associated with microwave popcorn actually stems from the use of certain chemicals in the lining of the bag itself. Sagon identifies these chemicals as perflurooctagonic acid (PFOA) and reports that they are frighteningly common in food packaging well-beyond microwave popcorn. Sagon reports that "PFOA is also used to make Teflon and other stain- and stick-resistant materials, including pizza boxes. It's part of a number of compounds that have caused liver, testicular and pancreatic cancer in animals. The chemicals may also be linked to infertility in women, according to a recent study at the University of California, Los Angeles." (Sagon, p. 1)
Sagon also goes on to indicate that PFOAs have been connected to childhood immunities to certain critical vaccines, making children with high levels of PFOA in their bloodstream more vulnerable to illness. In light of these concerns, it is troubling to note, according to Sagon, that roughly 95% of Americans have detectable traces of PFOA in their bloodstreams. What proportion of this is attributable to the mass consumption of microwave popcorn is uncertain, however, Sagon describes a reaction in which the process of microwaving the bag of popcorn causes the chemicals in the lining of the bag to seep into the popcorn that is then directly ingested.
Sagon reports that many popcorn makers are beginning to or have already taken significant steps forward in removing the identified chemical of diacetyl from their packaging. However, even those which have taken this step have in most cases replaced diacetyl with substances likely to have similar adverse health consequences but as yet unidentified in any popular or research-based context. The text by Adams (2011) reports that, in fact, researchers have been aware of the adverse consequences possible with exposure to diacetyl. And until the man above-mentioned contracted the bronchiolitis obliterans from consuming two bags a day, it was assumed that this condition was likely only to impact factory workers. However, Adams notes that the man's diagnosis would prompt direct attention to diacetyl and, in one regard, obscuring the risk posed by other chemicals to be used in popcorn packaging. According to Adams, the popcorn-consuming individual noted above would reveal for the first time to researchers evidence
"indicating that diacetyl enters the air and lungs when microwave popcorn is cooked. Anxious to reassure consumers, most microwave popcorn companies phased out diacetyl -- only to replace it with chemicals that have the same effects. Today, you can still find diacetyl in many flavored snack foods and even in some so-called 'natural' foods. Make sure you read the ingredients of any food you intend to consume, and make sure it contains no diacetyl." (Adams, 1)
In spite of Adams' counsel, one of the greatest obstacles to intervening in this issue is changing health beliefs and health behavior in relation to microwave popcorn. There is cause to believe that without a substantial, visible and informative public health campaign on this issue, most consumers will not alter their habits. To this end, we find an article from as early as 2008 already speaking to an awareness of the above-average health risks presented by microwave popcorn. Richards (2008) would tell roughly five years ago of the apparent dangers permeating our popcorn during the microwaving process. In fact, the Richards article suggests that the very artificial flavoring which makes popcorn so inherently addictive is also that which makes it so dangerous. Richards would report that "according to the U.S. Food and Drug Administration, "PFOA is present in microwave popcorn bag paper at amounts as high as 300 microg kg (-1)" (Richards, p. 1)
This means that even given the removal of diacetyl, a condition which the article by Noble & Noble (2011) reports will be regulated as mandatory by 2015, other PFOAs or synthetic substitutes may well present the same health problem. Sadly, this denotes that until we are given cause to believe that we can trust the thoroughness of regulatory oversight, we as a consuming public are best avoiding microwave popcorn altogether, even where the packaging notates the absence of diacetyl in its packaging. And in light of the fact that evidence existed to support the likelihood of diacetyl's danger, and in light of the absence of responsiveness exhibited by the FDA, there is no good reason to suspect that more responsible and preemptive actions will be taken going forward. What this essentially denotes is that health risks and hazards are simply too high to justify including microwave popcorn in one's diet. At present, no empirical research has been done to demonstrate with certainty that microwave popcorn causes lung cancer. However, it has been empirically linked to the bronchiolitis obliterans condition described above. Likewise, PFOAs and diacetyl specifically have been linked to lung and other types of cancer. Therefore, we can assert that there is a meaningful imperative for a more exhaustive and empirical investigation into the likely connection between microwave popcorn itself and lung or other types of cancer.
Until such time as this research is conducted, findings are yielded and sweeping regulatory changes alter the market and product behaviors of snack manufacturers, one would be best-served finding alternative means to making popcorn. For example, the text by Sagon suggests that one can still enjoy the charm and convenience of microwave popcorn by simply popping it in a brown paper bag. Using this method, one can replace the synthetic flavoring used into microwave bags with olive oil, clarified butter and other heart-healthy flavors, toppings and seasonings.
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