Re:
Is the popcorn genetically modified?
Scientists now understand that gene sharing can take place between different species. So when we eat and digest GM foods, like corn, the newly modified genes transfer into and change the good bacteria in the gut. It's called "gene transfer". [Heritage 2004; Netherwood, et al, 2004]
When you change the good bacteria in the gut, you alter the foundation of the immune system. What will the consequences be, if any? It may be too soon to tell. It's an ongoing experiment.