There has been an explosion of celiac disease and gluten intolerance in the past 10 years. The sale of gluten-free food has become a billion dollar industry. For some reason I can't stop reading about gluten and the ill affects it has on health. Celiac disease/gluten intolerance is often the first step in developing autoimmune disease. According to the University of Chicago, any person who experiences persistent infertility/miscarriage should be tested for celiac disease. The most common sign of celiac disease in adults is iron deficiency/anemia that does not respond to treatment.
Here is the fact sheet from the University of Chicago Celiac Disease Center. Here is the list of symptoms. Here is an article I just read from Columbia University. Here is an interesting post I read on a cardiologist's blog.