During the years, Prof. Naftali conducted research in the field of functional bowel diseases, including esophageal motility problems, gastroparesis, chronic constipation, fecal incontinence and more. In the field of IBD Prof. Naftali published studies involving, among other topics, treatment with cyclosporine in sever ulcerative colitis, adherence of patients to medical treatment, and more.
Furthermore, Prof. Naftali published several pioneering studies regarding cannabis treatment in sever IBD. These studies have shown that although cannabis does not improve the inflammation, it can induce symptomatic relief. In order to further understand the effect of cannabis on IBD, Prof. Naftali established the Gastro Cannabis laboratory in which the exploration of the effect of cannabinoids on the gastrointestinal tract continues.