Association between atopic dermatitis and inflammatory bowel disease among US adults in the All of Us Research Program

Our study investigated the association between atopic dermatitis (AD) and inflammatory bowel disease using the All of Us Research Program, a US National Institutes of Health database providing health information on over 300 000 Americans. This cross-sectional study demonstrated that individuals with AD have an approximately twofold increase in odds of having inflammatory bowel disease, Crohn disease and ulcerative colitis, compared with individuals without AD.