If your doctor advises you to have gluten free diet, chances are that you do not know exactly what types of foods you should have and why. Some people are often mislead by food products that were labeled gluten-free when in fact they actually do contain gluten. Fortunately, the soon-to-be FDA rules will follow a strict implementation that no product can claim to be gluten-free unless it has been verified to contain 20ppm or less. For those who are new to the gluten-free diet, it can be quite tricky to determine which foods really do not contain gluten, or at least not enough gluten to mess up your health. Deliciousliving.com gives us a list of the foods that contain gluten, and most of you may just have never known about this.