A study published in the July issue of the journal Gastroenterology found that the cannabinoid receptor system helps regulate "colon propulsion." The study showed that a natural endocannabinoid and another synthetic cannabinoid both inhibited colonic propulsion in mice. Conversely, a cannabinoid blocker produced "increased motility."
The researchers also found high amounts of some endocannabinoids inside the colon itself.

- Gastrointerology: www2.gastrojournal.org. Abstract: www2.gastrojournal.org/scripts/om.dll/serve?action=searchDB&searchDBfor=art&artType=abs&id=agast1230227&nav=abs