Fake Flavorings Really Are Hazardous to Your Health

The workers, by and large, have been young and healthy. None were smokers, and none had any history of lung disease. But after working at plants that produce food flavorings, they all had one thing in common: they could not breathe.

Over the last several years, California health officials have been tracking a handful of workers in flavoring factories who have been incapacitated with a rare, life-threatening lung condition — bronchiolitis obliterans — for which there is no cure or treatment. Usually found only in people who are poisoned by chemical fires or chemical warfare or in lung transplant patients, bronchiolitis obliterans renders its victims unable to exert even a little energy without becoming winded or faint.

“The airways to the lung have been eaten up,” said Barbara Materna, the chief of the occupational health branch in the California Department of Health Services. “They can’t work anymore, and they can’t walk a short distance without severe shortness of breath."

... In each case, scientists and health officials say, the common dominator is exposure to the vapors from a pungent yellow-colored flavoring called diacetyl, best known for giving microwave popcorn its buttery goodness.

New York Times via Serious Eats

They are calling the disease "popcorn lung." Now that is a crying shame. And for what? Just one more reason to use real butter, y'all.