Deficiencies and Complications in Inflammatory Bowel DiseaseSummary. Deficiencies of vitamins and trace elements ate frequent in inflammatory bowel disease. Airo of this study was to evaluate retrospectively the prevalence of these deficiencies and of liver complications in a large population. The records from 392 out-patients, 279 with Crohn's disease (160 female, 119 male) and 113 with ulcerative colitis (56 female, 57 male) were analyzed. Deficiencies were found in 85% of patients with Crohn's disease vs. 68% with ulcerative colitis during the course of the disease, predominantIy a deficiency of iron and of calcium. Less frequently deficiencies of zinc, protein, cyanocobalamin, and folic acid were found. Elevated liver enzymes were seen in 38% of patŸ with Crohn's disease vs. 27% with ulcerative colitis. In order of frequency: y-glutamyl-transferase, ALAT, AP, ASAT, and bilirubin. Gallstones were present in t2% of patients with Crohn's disease and 4% with ulcerative colitis. 6% of patients with Crohn's disease and 4% with ulcerative colitis had kidney Klinik und Potiklinik fª Innere Medizia 1. Klinikum der Unive¡ Regensburg.