An April 2021 study by Penn State College of Medicine, Hershey Medical Center said,

"Our data indicate that [Lactobacillus acidophilus] is able to prevent colonic inflammation formation and promote colitis healing,”

"The implications of the present findings are that this bacterial strain can be used in a wide variety of intestinal permeability disorders, including IBD [inflammatory bowel disease], coeliac disease, alcoholic liver disease, non-alcoholic fatty liver disease, and necrotizing enterocolitis, to treat inflammation associated with the leaky gut.”