Ever been confused by the labels you see on food at the grocery store? Well, everyone else is confused, too. It turns out labels like “organic,” “whole wheat,” “free-range,” and “fat-free” might not mean what’s implied. Read on to discover which food labels are actually telling the truth, and which ones you should stay away from.

1. Sugar-Free

Sugar-free products don’t actually contain real sugar, but sugar alcohols, which can cause fun gastrointestinal issues like diarrhea—watch out for that!

2. Fat-Free

This label is everyone’s favorite thing to see slapped on a bag of cookies. Fat-free labels represent foods with less than 0.5 grams of fat per serving. Studies, however, have shown that food without fat lack in taste, so food producers have been adding more sugar, salt, flour, and other thickeners to perfect the taste and texture till it’s just right.

3. Organic

The world is obsessed with all things “organic,” but what does that even mean? Although the meaning of organic used to be somewhat sketchy, it now indicates that 95% of a product’s ingredients were produced without fertilizers or pesticides.

4. Free-range

Food-conscious people love bragging about their free-range eggs and meat, which quite literally means nothing. There are no specific guidelines for raising free-range animals, except that they’re supposed to have “exposure to the outdoors.” Seems legit.

5. Whole Wheat

Sometimes breads marked “whole wheat” or “multigrain” are treated with caramel coloring for a darker look. This is done to differentiate it from white bread, which we all know to be horrible for you. Avoid buying breads with any added color and always pick whole wheat.