Sarcopenia in patients with active ulcerative colitis: associations with serum metabolites and gut microbiota

BackgroundSarcopenia has garnered increasing attention in ulcerative colitis (UC) owing to its association with adverse clinical outcomes; however, its pathogenesis in the context of UC remains insufficiently characterized.MethodsHospitalized patients aged 18–70 years with active UC were consecutively enrolled at the Department of Gastroenterology, Peking Union Medical College Hospital, and age...