PFAS in Pizza Boxes: Is Your Slice Contaminating Your Dinner?

PFAS are called “forever chemicals” because they resist breakdown in both the environment and the human body. Pizza box cardboard has historically been treated with PFAS-based coatings to keep grease from soaking through. That means your hot, oily pizza is sitting directly on a PFAS-coated surface for the entire ride home.

For more on PFAS-free living, see our guide to PFAS free sous vide cooking and PFAS free pillows.

What the research says about PFAS in pizza box cardboard

Peer-reviewed research, including studies published in Environmental Science & Technology, confirms that PFAS in everyday products contributes to your total body burden. Your liver and kidneys work to process these chemicals, but PFAS accumulates faster than the body can clear it. Hot, greasy food like pizza pulls more PFAS out of coated packaging than cold or dry foods would, which makes pizza boxes a particularly direct exposure route.

How to identify PFAS-free pizza box alternatives

Manufacturers aren’t required to disclose PFAS use on food packaging in most U.S. states, so you can’t always tell from the label. Here’s what to look for:

• Certifications: OEKO-TEX Standard 100, bluesign, and GOTS certification all prohibit PFAS in certified products.
• Watch for these terms: “Grease-proof,” “water-resistant,” and “stain-resistant” on food packaging often signal PFAS-based treatments.
• Ask the brand directly: If a company is truly PFAS-free, they’ll tell you. Vague answers are a red flag.
• Check the PFAS Free Life Database for tested, verified products across hundreds of categories.

Safe alternatives to PFAS-coated pizza box packaging

When you’re storing or reheating pizza at home, skip the box entirely:

• Transfer pizza to a plate or glass container right when you get home
• Use uncoated parchment paper between slices when stacking in the fridge
• Store leftovers in glass or stainless steel containers, which are inert and PFAS-free by nature

One product we recommend: Stasher Reusable Half Gallon Silicone Food Storage Bag. It’s food-safe silicone, dishwasher and microwave safe, and works well for storing leftover pizza and other food.

More ways to reduce PFAS exposure from food packaging

Beyond pizza boxes, daily habits matter:

• Transfer takeout food to your own containers as soon as you get it home, rather than eating directly from coated packaging
• Choose food-grade glass or steel for anything that contacts hot food directly
• Filter your drinking water with a reverse osmosis system, which is the most effective household option for PFAS removal
• Ventilate your home regularly, since PFAS can settle into household dust

For a broader reduction strategy, check out our guide to top PFAS free water filters and search the PFAS Free Life Database.

Frequently Asked Questions

How do I know if my pizza box has PFAS?

Without lab testing, it’s hard to know for sure. Look for terms like “grease-resistant” or “grease-proof” on the packaging. Some major pizza chains have committed to phasing out PFAS in their boxes, but not all have followed through. You can search the PFAS Free Life Database for verified clean products across food packaging categories.

What health risks are linked to PFAS in pizza boxes?

PFAS exposure from food packaging has been associated with elevated cholesterol, immune system disruption, hormone interference, and in some studies, increased cancer risk. Children and pregnant women are considered especially vulnerable. When you reduce exposure, your body does gradually clear these chemicals, so switching to PFAS-free storage makes a real difference over time.

Can I test my home for PFAS contamination?

Yes. You can test your drinking water for PFAS using certified lab services or at-home kits from companies like SimpleLab. Testing products or household dust for PFAS is more complex, but starting with your water is the most impactful first step. Your state health department may also offer resources or low-cost testing programs.