"One reason for concern about microwave popcorn centered on PFAS (per- and polyfluoroalkyl substances), diacetyl, and tertiary butylhydroquinone (TBHQ), a synthetic preservative that has raised health concerns. PFAS are synthetic chemicals used to make packaging grease- and water-resistant and were often used for the inner lining of popcorn bags to prevent oil from leaking, and diacetyl was linked to a condition called "popcorn lung" that affected workers in facilities where the popcorn was produced."
"The good news is that, in 2016, the Food and Drug Administration phased out several types of PFAS from food packaging, and in 2024, PFAS were eliminated from materials that come into contact with food. It's important to note that not all forms are banned, and not all companies comply with the mandate. But many manufacturers have heard consumers' concerns, and many newer or organic brands now use PFAS-free or compostable bags,"
Microwave popcorn raised health concerns due to PFAS in bag linings, diacetyl linked to "popcorn lung" in workers, and the synthetic preservative TBHQ. Many older products contained high sodium and unhealthy fats such as palm oil, hydrogenated oils, saturated fats, and butter flavorings. Regulatory action reduced PFAS in food packaging beginning in 2016 and further steps targeted materials contacting food in 2024, though some forms and companies remain outside mandates. Many manufacturers now offer PFAS-free or compostable bags and simpler recipes that list only popcorn, oil, and salt without preservatives.
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