Originally posted on In These Times
The aroma of hot buttered popcorn evokes all sorts of childhood nostalgia, but for many workers, those savory vapors pose a modern industrial health hazard.
Evidence has been building over the years of a respiratory illness primarily afflicting factory workers exposed to the microwave-popcorn butter flavorant, diacetyl (DA). Now, researchers have discovered another potential hazard related to DA: long-term risk of Alzheimer’s disease.
Researchers with the University of Minnesota’s Center for Drug Design studied the effect of the “ubiquitous butter-ﬂavoring agent” and detected an association with “long-term neurological toxicity,” particularly among industrial workers who are smothered in the stuff every day.
The federal government has in recent years urged the industry to limit potentially toxic workplace exposures to DA, but it has not defined an explicit regulatory exposure limit. Federal authorities have published advisories for employers to control DA exposure, but like many chemicals wafting across the country’s assembly lines and pervading our processed foods, DA (and similar chemical substitutes) are still amply used, with little restriction on behalf of public health.
Dr. Swati More, one of the study’s authors, says the findings should raise concerns that, in addition to posing respiratory risks, DA exposure “may lead to brain deterioration. The question that needs to be answered is, how much of diacetyl does one need to consume and for how long.”
Though the University of Minnesota study focuses on long-term effects related to beta-amyloid protein clumping in the brain, and was conducted at only the cellular level (not on humans), it adds to a growing body of research on the toxic impacts linked to DA exposure. Academic, media and government investigations have revealed both anecdotal and epidemiological evidence of “popcorn lung.”
The main occupational health issue surrounding popcorn lung, which has been acknowledged by the National Institute for Occupational Safety and Health (NIOSH), is bronchiolitis obliterans. (There is also some evidence of respiratory risk for extreme popcorn eaters.) Read the rest of this entry →