What does it mean?  Why would you want gluten free?   Why would you give up the tasty bread, pasta, etc.   

Celiac disease was almost unknown a few years ago. Now many identify themselves as sensitive to gluten. Gluten is considered a significant cause of inflammation and digestive problems leading to many diseases.   

Here is an article on Gluten Intolerance

Here is a video by the Real Food Channel talking about Gluten Free Diet