You should not intentionally eat packing peanuts, even if some types are labeled “biodegradable” or “edible.”

Quick Scoop

What packing peanuts are made of

There are two main kinds of packing peanuts you’re likely to run into.

  • Polystyrene (Styrofoam) peanuts:
    • Made from petroleum-based plastic.
    • Not biodegradable, not digestible, and not safe to eat.
  • Starch-based “biodegradable” peanuts:
    • Made from corn, potato, or other plant starches.
    • Often marketed as non-toxic and sometimes even described as “edible,” especially by shippers and retailers.
* Dissolve in water and break down more easily in the environment.

So… can you eat them at all?

Here’s the nuance, keeping safety first:

  • Styrofoam peanuts:
    • Should never be eaten on purpose.
    • Even small amounts can irritate your digestive system and contain chemicals of concern like styrene.
  • Starch/biodegradable peanuts:
    • A couple accidentally swallowed by a child or pet are usually described as “non-toxic,” meaning they’re unlikely to poison you.
* But they are manufactured in non–food-safe conditions and have their nutritional value removed, so they are not considered food.

* Health experts have also raised concerns that high-heat processing and certain oils used in these products may create potentially harmful compounds if eaten in quantity (for example, acrylamide and issues linked to heated vegetable oils).

Why people online talk about eating them

Recently, there’s been a small viral trend where creators season or fry biodegradable packing peanuts and taste them on video, treating them like fake chips or Cheetos.

  • Some shippers openly state their biodegradable peanuts are “safe to eat” or “100% edible,” which has fed the trend.
  • Health and news sites, along with doctors, have responded with warnings that “biodegradable” does not automatically mean it’s a good idea to snack on them, especially in larger amounts or regularly.
  • On forums, people often joke about eating “a whole box of packing peanuts,” but replies usually note risks like stomach upset, possible blockages, or vomiting if someone overdoes it.

In short, the internet may treat it like a quirky dare, but medical and safety advice leans strongly toward “don’t treat them as food.”

Possible risks if you eat them

Even with “safe” starch-based peanuts, repeatedly or intentionally eating them can bring downsides.

  • Immediate issues:
    • Bloating, gas, and stomach discomfort.
* Nausea or vomiting if you eat a lot or eat them quickly.
  • Physical blockage:
    • Styrofoam pieces in particular can contribute to blockage in the digestive tract, especially in kids or pets.
  • Longer-term concerns:
    • Processing at high temperatures and the use of certain oils can create compounds linked in research to inflammation and possible cancer risks when consumed excessively.

If someone (especially a child or pet) eats a noticeable amount and has pain, vomiting, trouble swallowing, or seems unwell, it’s safest to contact a doctor, poison control, or a vet right away.

If you’re just curious

If your question is more “could I try one as a weird experiment,” the safest stance is:

  • Don’t intentionally eat Styrofoam peanuts at all.
  • Even with starch-based or “edible” branded peanuts, safety experts and doctors still recommend treating them as packaging, not snacks.
  • If you want something with that crunchy, puffed texture, reach for actual food products designed for eating (puffed corn snacks, rice crackers, etc.), which are made under food-grade standards and tested for safety.

Bottom line:
Accidentally swallowing one or two starch-based packing peanuts is unlikely to seriously harm a healthy adult, but you should not treat any type of packing peanut as food or a regular snack.

Information gathered from public forums or data available on the internet and portrayed here.