I basically try to eat things that don't have labels as much as possible, (lots of nuts, legumes veggies, fruits 'n dried fruits, fishes, wholegrain carbs, white meats, etc). If I'm not sure of a natural food's content, I hit the Net.
I'm even making my own cookies and such now, so when those sweet-craves happen, they happen in health. I use whole wheat flour, and more often than not, almond flour to keep the carb contents lower.
Some things of course do have labels, so when I buy things like say jam, it's no-sugar-added natural prune spread, which usually has half the calories of a regular jam and only fructose for my blood to deal with. Plus I really like that stuff with lo-fat cream cheese on a fibery crispbread.