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Celiac disease or gluten-sensitive enteropathy is a relevant health concern in today's world. Three prerequisites need to be met to trigger the disease, namely a genetic predisposition, gluten consumption, and environmental factors. Retrospective studies conducted across all age groups have ruled out the possibility that improved diagnostic methods were behind the increased prevalence. Since the genetic predisposition is more or less constant in the population, it is assumed that external factors may play a major role in this increase. Although it is generally believed that modern wheat varieties are to be blamed for the increase in gluten intolerance-related diseases, this assumption is refuted based on the analysis of the current and 100-year-old varieties. However, the increased prevalence could be related to modern lifestyles, changes in food preparation technology or composition, disruption of the intestinal barrier in viral disease, and other factors leading to intestinal dysbiosis. A possible preventive strategy in predisposed individuals could be the avoidance of gluten from the diet when ill, especially with a viral infection. This article openup a new perspective on the currently common autoimmune disease.