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Celiac disease is indeed more prevalent among individuals with type 1 diabetes mellitus (T1DM). This relationship can be attributed to the shared autoimmune mechanisms underlying both conditions. Individuals with T1DM have a higher risk of developing celiac disease due to genetic factors and immune system dysregulation. It's important to recognize that both conditions are associated with certain genetic markers, particularly the HLA-DQ2 and HLA-DQ8 haplotypes, which are found at elevated levels in both T1DM and celiac disease patients.

Understanding this connection can help healthcare providers screen for celiac disease in patients with T1DM. Symptoms of celiac disease may sometimes overlap with those of diabetes or be absent altogether, which can lead to underdiagnosis in this population. Consequently, being aware of the increased prevalence is essential for proper management of individuals living with T1DM.

While all options present different aspects of celiac disease in relation to diabetes, none capture this specific relationship as accurately as the statement confirming the increased prevalence of celiac among T1DM patients.