Having good physical health is an important part of living a happy and productive life. But for many young people, illnesses such as celiac disease can get in the way. People with this illness have a severe allergy to gluten, an ingredient in many foods. Fortunately, people with celiac disease can learn to manage their condition. This begins with a proper medical diagnosis, but it doesn't stop there. Patients with celiac disease must adopt a gluten-free diet so their bodies can get the nutrients they need. Part of the Managing Common Illnesses series, Managing Celiac Disease is a guide for young people who want to learn more about how they can help themselves feel their best both physically and emotionally, so their condition doesn't keep them from living their best lives.