Bananas contain a protein called lectin, which is also found in many of the night shade foods that some people with Celiac or gluten intolerance have trouble with. Lectin is somewhat similar to gluten and can create an autoimmune response.

1) Amaranth. 2) Arrowroot. 3) Buckwheat. 4) Corn and cornmeal. 5) Flax. 6) Gluten-free flours (rice, soy, corn, potato, bean) 7) Hominy (corn) 8) Millet.

Many people may just perceive that a gluten-free diet is healthier." In fact, it isn't. For people with celiac disease, a gluten-free diet is essential. But for others, "unless people are very careful, a gluten-free diet can lack vitamins, minerals, and fiber," says Green.