This month is Celiac Disease Awareness Month. Chances are, if you don't have the disease, you don't know much about it (unless you work in the health field). So to understand Celiac disease, we first have to know what a little thing called gluten is. Gluten is a protein in grains like wheat, oats, barley, and rye. It means "glue" in Latin, because it holds bread together and gives dough its stickiness. Different grains have different amounts of gluten; the more gluten, the chewier it makes your baked goods. For example, the flour used for bagels and pizza has more gluten than the flours used in light, crumbly pastries. So what does gluten have to do with Celiac disease? If gluten goes into the small intestine of someone with the disease, it causes an immune system reaction. This means gas, bloating, etc. "True celiacs" will have these reactions even if they eat a small amount of gluten. Other people may just be sensitive to gluten and need to eat less of it. More about Celiac disease here.