The following links provide information about everything from symptoms to treatments, to how to talk to your friends about Celiac. Many of them address the unique concerns teenagers may face.

Celiac Disease (Teens Health)

Birthday cake. Pizza. Chocolate chip cookies. For people with celiac disease, a lifelong disorder of the digestive system, these foods aren't always the treats that most people think they are.
http://www.kidshealth.org/teen/diseases_conditions/
digestive/celiac.html

Club Celiac

Club Celiac is a great place for children with Celiac Sprue to trade helpful hints, recipes and/or simply to just have fun chatting with each other.
www.clubceliac.com