Eighty patients with similar characteristics were randomized into coffees group and water group before their operation. The majority had open 61 percent and the remainder had laparoscopic surgery. They were given 100 ml of coffee or water three times a day.
Time to first bowel movements after surgery was just over 60 hours in the coffee group, while patients in the water group had first bowel movement in 74 hours. Patients in the coffee group were able to tolerate solid food in just over 49 hours, compared to about 56 hours in the water group.