The plastic cheese is what kills you.
Velveeta and American slices In 2002 the FDA became aware that the ingredients of Velveeta didn't contain any actual cheese.
"Because its manufacturing process differs from "unprocessed"/raw/natural cheeses, American cheese cannot be legally sold under the name "cheese" in the US. Instead, federal (and even some state) laws mandate that it be labeled as "processed cheese" if simply made from combining more than one cheese, or "cheese food" if dairy ingredients such as cream, milk, skim milk, buttermilk, cheese whey, or albumin from cheese whey are added. As a result, sometimes even the word "cheese" is absent altogether from the product's labeling in favor of, e.g., "American slices" or "American singles".
Burgerville (an Oregon company) sells Tillamook cheese burgers made with real Cheddar cheese.
Tillamook CheeseburgerŪ
TillamookŪ cheddar, mayonnaise, ketchup, pickles, tomato & lettuce on a sesame seed bun