Those little bags of popcorn are so convenient to just stick in the microwave, you wouldn't think for a minute that they could be dangerous to your health, but they are.
First, let's talk about the bag itself. Proved by Wikipedia, conventional microwave popcorn bags are lined with a chemical called perfluorooctanoic acid ( PFOA). This is a toxin you can find in Teflon also. According to a recent study at the University of California, PFOA is linked to infertility in women. Numerous studies in lab animals and humans show that exposure to PFOA significantly increases the risk of kidney, bladder, liver, pancreas and testicular cancers. You can read more about this substance and the above mentioned studies at cancer.org.
Now, let's talk about the contents. Although every manufacturer uses slightly different ingredients, most of them use soybean oil (a GMO product) as well as various preservatives such as propyl gallate, a chemical that is causes stomach problems and skin rashes. Now they don't actually say they are using GMO corn kernels, but that's because the government says they don't have to. Even if they don't use GMO corn, you can bet they aren't using organic corn!
Also, applied to the popcorn itself, is a chemical called diacetyl. Use of this chemical caused Conagra Foods to remove it from their brand of popcorn, ACT, because it was causing lung diseases in the workers at their factory.
http://naturalon.com/10-of-the-most-cancer-causing-foods/