Microwave Madness: The Dish on Dioxins

Rumor

Using plastics in the microwave creates dioxins that can migrate into food.

Status

Baloney!

Origins

Versions of this e-mail hoax have been circulating for years. (The station number and call letters vary from region to region.)

What You Should Know

The claim that plastic food wraps and containers can release dioxins in the microwave oven is misleading. First, the vast majority of plastics used in food wraps and packaging containers do not contain the chemical constituents that can form dioxins. Second, dioxins are a family of compounds that are produced by combustion at high temperatures. They can only be formed during combustion at temperatures typically above 700 degrees Fahrenheit. In other words, even if all of the constituents were present, you also would need to have a very hot fire in your microwave oven, in which case you probably wouldn’t eat the food anyway.

According to FDA, “With regard to dioxins, we have seen no evidence that plastic containers or films contain dioxins and know of no reason why they would.”

When should you use a plastic product in the microwave? A variety of today’s plastic wraps, packages and containers are specially designed to withstand microwave temperatures. To make sure yours is one of them, check the item or its packaging label. Only use a product in the microwave if the manufacturer indicates that it is okay to do so and be sure to follow any specific instructions provided. If neither the item nor the package is marked, use a different container.

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