Gluten-free diet refers to foods completely free of gluten, such as gluten-free bread, pizza, some fast food and other staple foods. Gluten-free diet is mainly used to treat patients with celiac disease and gluten allergy.

Gluten-free diet is mainly used to treat celiac disease patients because these patients are allergic to gluten. However, at the beginning of 2 1 century, gluten-free diet has set off the trend of European and American food circles. With the blessing of Hollywood stars and athletes, topics and controversies continue, even being labeled as slimming, which has become the secret of celebrity slimming.