Are you capable of reading labels? It's all there, in far more detail than you will ever get from a sign in a grocery store. Are you capable of using Google and a calculator? It's all there, in far more detail than you will ever get from a sign in a pizza parlor, even assuming they list all 34 million variations.
You would obviously rather use no common sense - whether it's about brocolli or about pizza.
The only labeling I need in a grocery store is whether it is "organic" - so I know what to avoid in order to not get a dose of E-coli from the slave labor plantations worked by illegal Mexican immigrants for the benefit of big Obama/Pelosi/Reid campaign donors.