“a short course (8 weeks) of THC-rich cannabis produced significant clinical, steroid-free benefits to 10 of 11 patients with active Crohn’s disease, compared with placebo, without side effects.”
Naftali, T., Schleider, L. B., Dotan, I., Lansky, E. P., Benjaminov, F. S., & Konikoff, F. M. (2013). Cannabis Induces a Clinical Response in Patients With Crohn’s Disease: A Prospective Placebo-Controlled Study. Clinical Gastroenterology and Hepatology, 11(10). doi:10.1016/j.cgh.2013.04.034