"McDonald's said the menu items not free of artificial preservatives, flavors and colors are the Egg McMuffin; Bacon, Egg & Cheese Biscuit; Bacon, Egg & Cheese McGriddles; Filet-O-Fish; and several of the Signature Crafted Sandwiches.
There's no specific timeline for when the final third of the menu will become artificial preservative-, flavor- and color-free, Kempczinski said."
If you want to know the effects of "fast food" and the crap in it, just watch "Super Size Me".