The result of these evaluations: FDA for decades has determined that polystyrene is safe for use in contact with food. In addition, FDA has approved styrene as a food additive – it can be added in small amounts to baked goods, frozen dairy products, candy, gelatins, puddings and other food.

Are polystyrene cups toxic?

Studies show that styrene, a likely carcinogen, can leach from polystyrene foam cups and containers when heated. Never put hot food/drink into polystyrene foam containers, and never microwave these (or any plastic) products!

What are the negative effects of using polystyrene for cups?

Is it true that Styrofoam contains toxic chemicals? Yes. Styrene is the building block for Styrofoam, and the International Agency for Research on Cancer (IARC) lists styrene as a “probable carcinogen to humans”. That is the same grade given to human papillomavirus (HPV), which has been linked to cervical cancer.