The prevalence of zinc deficiency is about 50 percent in inflammatory bowel disease (IBD) and is higher in patients with Crohn disease (CD) than those with ulcerative colitis (UC), according to a study. Roberta Zupo and colleagues conducted a systematic review and meta-analysis to examine the prevalence of zinc deficiency in IBD. Nine articles met the inclusion criteria, which included 17 prevalence entries for CD and UC (nine and eight, respectively). The researchers found that across selected studies, the prevalence of zinc deficiency showed higher values in CD than in UC. In pooled analyses, the overall mean zinc deficiency prevalence...