While the glowing Tuna is not good, I worry a lot more about the bread that can sit in a drawer or on a counter for over a month and still make an almost tasty sammich.
Seriously. Try it. While not ‘fresh’ by any means, it’s still completely edible.
And just what are preservatives that can do that doing to your guts?
You can't ask that question here. That makes you anti-business; believe me, I've been there.
People have been eating 'Wonder Bread' since the 1950's. It's perfectly safe - unlike Brown Rice that's filled with arsenic... (See Consumer Reports - November 2012 for a full listing of arsenic laden rice products - Carolina Whole Grain Brown Rice comes in at 6.4 to 8.7 micrograms of arsenic per serving.)
Run from the Carolina and Delta brown rice, Barbara's brown rice crisps, and Lundberg Sweet Dreams Eco-farmed Brown rice syrup... waaaay to much arsenic. And skip the grilled tuna. Enjoy spun white bread - it's good for you.