What is the prevalence for others in my family to have celiac disease since I’ve been diagnosed with it?

Celiac disease is an inherited autoimmune disease. The prevalence of celiac disease in 1st-degree relatives (children, parents, siblings) has been reported by numerous studies around the world to be significantly higher than in the general population, hence the need to screen every 1st-degree relative. The actual prevalence varies among the published studies, between 4-16%. Our own experience when testing for celiac disease in 1st-degree relatives is a prevalence around 5%, or 1:20. In 2nd-degree relatives (aunts, grandparents, uncles) a prevalence around 2.6%, or 1:39.