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PFAS can enter the body through food packaging, especially those designed to be grease-resistant, such as fast food wrappers, microwave popcorn bags, pizza boxes, and some bakery papers. The chemicals in the packaging can leach into food, especially when the food is hot or greasy. Over time, this contributes to low but continuous exposure to PFAS compounds, which accumulate in the body. Regulatory agencies have begun taking steps to limit PFAS in food packaging, but exposure remains a concern due to widespread use in food-related materials.